After Effects CC sluggish "Fast Preview" playback

Hello,
I've recently upgraded from After Effects 5.5 to CC. I've found CC to be very sluggish in many ways, from using the interface itself, to scrolling down my layers using the mouse wheel, to not being able to get realtime playback once I spacebar preview a bit of my timeline.
None of these things were or are issues with After Effects 5.5 which I still have installed thankfully.
My main question is about space bar previewing (foreground memory) bits of your timeline in CC. (Not ram preview)
In After Effects 5.5, it didn't matter how complex my project was, if I hit spacebar to preview it would slowly preview and load, you could see the green render line building, as soon as I was happy I could scrub the rendered green area and if I hit spacebar at any point in the rendered area, After Effects would playback realtime.
This is very important to me because when dealing with little intricate key framing it's nice to be able to playback a given spot within the rendered green area and get realtime playback instantly.
This is impossible to do in CC, it doesn't matter if I spacebar preview or RAM preview an area. When I scrub the green rendered area and hit spacebar to get realtime playback it will never manage to playback at full framerate. The only way to do this is to RAM preview but that defeats the purpose because you have to keep adjusting the work area bar, and it's just not the same as spacebar previewing which gives you more freedom and you don't have to wait for the RAM preview to kick in.
Is their any work around for this? and is their any plans to fixing the general sluggishness of After Effects CC?
Any feedback would be greatly appreciated.
Many Thanks,
Jakub
I'm running
Mac Pro
2 x 2.4 GHz Quad-Core Intel Ceon
32GB DDR3
ATI Radeon HD 5770 1024 MB
OS X 10.8.2 (Mountain Lion)

Hey Szalam,
I'm on Mountain Lion, the sluggish interaction occurs with or without multiprocessing enabled, my cache is set to 100GB, my composition's are always set to standard classic renderer. Again I also have CS5.5 installed simultaneously and it runs lightning fast in comparison just with default settings. But to be clear, this is not a complaint about actual rendering to file but of not having realtime spacebar preview and the general sluggishness of the UI interaction.
The benefit of realtime spacebar preview is you can preview yourself a little section of timeline and work within that area in almost realtime. If you make a small keyframe adjustment then the green preview line only breaks in that tiny section and it only takes half a second to spacebar render it again, then once you hit stop, the scrub line stay exactly at that frame.
Not having it playback in realtime really does slowdown the process and as Coolbaboon said, it forces you to work in a less intuitive manner.
Again if theirs any current workaround I'm all ears. In the meantime I hope this will be fixed as part of the big overhaul hopefully coming soon. Realtime spacebar preview and a way more responsive UI, like 5.5 had.

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After Effects CS6 error: RAM Preview needs 2 or more frames to playback - any ideas please?

Hi everyone,
I'm running After Effects CS6 (11.0.4.2) on a MacBook Pro 2.8Ghz with 16GB RAM (Mac OS 10.9.4)
As a test, I created a 3 and a half minute Sequence in Adobe Premiere CS6, and then imported this into After Effects CS6, and placed it on the AE timeline.
This footage involves a couple of 1920x1080p footage movies, some psds and a large number of JPGs exported from two videos arranged as a sequence in two layers in Premiere, one on top of the other. So all in all for a Premiere / After Effects file I'd say it's reasonably heavy.
I then did a RAM Preview with Multiprocessing switched off - the 3 and a half minute sequence loaded into RAM, taking about 1min 30seconds, and played back in realtime at 25fps. This worked fine with 3,4,5 and 6 GB RAM available to other applications in the Memory Preferences. All things considered I think this is quite good. I can make changes, reclick the RAM Preview icon and my changes load into RAM and it previews ok.
My only 'complaint' is how long the RAM Preview takes to load up the whole thing.
I've been reading up on Multiprocessing and decided to try this to see if I can speed up the time it takes my RAM Preview to load up.
So I looked at some recommendations from Adobe and read information on various forums including this one.
My settings in the Memory Preferences are currently
• 6GB reserved for other applications
• Reduce cache size when system is low on memory - unticked
• After Effects Multiprocessing - ticked
• Installed CPUs (processor cores) - 8
• CPUs reserved for other applications - 6
• RAM allocation per background CPU - 3GB
• Actual CPUs that will be used - 2
This combination takes about 25 seconds to load up my 3 and a half minute sequence which I thought was pretty amazing.
I then pressed the stop button and then the play button - so now just playing the sequence briefly.
And also added a new layer - into the timeline - just a simple shape.
Then I tried a RAM Preview again.
I found I could load up part of the sequence but not load the whole thing into RAM.
I kept trying to get a RAM Preview and got this message
"After Effects error: RAM Preview needs 2 or more frames to playback" which seems to prevent RAM Preview from working.
Eventually I quit and restarted After Effects and the problem went away temporarily and then came back when I tried again.
I tried various changes to the Memory Preferences - trying 3GB available for other applications. This gave 13GB of my 16GB RAM to After Effects.
This made it take slightly longer for the After Effects error to appear but it still appeared.
I tried ticking Reduce Cache size in the Memory Prefs - the After Effects error still appeared, so having read this is supposed to make the issue better I now leave it untucked, but as far as I can see ticked or untucked, it makes no difference, the problem remains.
I've since tried -
Making 2,3,4,5 and 6 CPUs available for other applications.
Changing the Background RAM allocation per background CPU to 0.75GB, 1GB, 1.5GB, 2GB and 3GB
Lots of combinations.
But in the end, I always get the "After Effects error: RAM Preview needs 2 or more frames to playback" error.
It might take less or more time for the message to show up, depending on the combination of settings, but in the end I always got the same message appearing.
And I notice that I can RAM Preview less and less of the timeline. i.e. it becomes more blue than it does green and will load in only a small section of the timeline as opposed to the whole thing.
Reading further, I tried Edit > Purge > Image Cache and Edit > Purge > All Memory but still get the error message.
I also tried ensuring there were no other applications running e.g. Safari or Chrome or Firefox. And certainly not Photoshop or Premiere etc.
Reading even further, I tried two Memory management applications - 'Memory Clean' and 'Purge.'
Neither has had any effect - the After Effects error still appears.
Then I went back into the Memory and Multiprocessing Preferences.
I unticked Render Multiple Frames Simultaneously. And now the RAM Preview loads the whole 3 and half minute sequence in entirety, taking about 1 and half minutes to do so. It's working as perfectly as if I'd just quit and re-opened the application.
Then I went back into the Memory and Multiprocessing Preferences.
I reticked Render Multiple Frames Simultaneously.
The chose Edit > Purge > All
And tried a RAM Preview again. It loaded up in 25 seconds, but then, as previously, the error message came.
I tried Edit > Purge All - no effect.
And I tried going into the Media and Disk Cache Preferences and clicked Empty Disk Cache - still the problem remains.
I understand from my reading that After Effects CS6 11.0.2 was intended to fix this issue but I'm on 11.0.4 and as far as I can tell, I still have it - assuming it's the same thing.
As far as I can see, not using Multiprocessing allows me to work without these errors but take a bit longer to load the RAM Preview.
However I'd like to be able to use Multiprocessing as it seems it can potentially speeds things up quite a lot. I realise I could just not use it and AE would work, but I'd rather be able to make use of a feature of the software if possible, especially if it will speed things up and make optimum use of the my computer's hardware.
I've downloaded a trial copy of After Effects CC 2014. I'm still testing it but as far as I can see the RAM Preview error appears in this version of AE as well, but can take bit longer to show up in my experience.
Thanks everyone - if anyone has any thoughts or advice I'd appreciate hearing your opinions.
Kind regards,
John

You need to have much more RAM reserved for other applications and more CPUs reserved for other applications. Your current settings are crippling your performance.
Read these:
https://blogs.adobe.com/aftereffects/2009/12/performance-tip-dont-starve-yo.html
http://blogs.adobe.com/aftereffects/2010/03/performance-tip-dont-oversched.html
After you have adjusted your settings according to the recommendations on those pages, restart your computer and try again.

After Effects 2014 CC Ram Preview Issue

Ever since I upgraded to CC 2014(from CC) I have been experiencing an issue. My RAM preview will start somewhere in the middle of my in/out points. I have to wait for it to loop to see the beginning. I have tried checking/unchecking "from current time," I have tried cycling through the playback options, and I have tried clearing my cache. Nothing seems to work. Any help would be greatly appreciated!

This is a known bug with Mac OSX v10.10 (Yosemite).
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After Effects will not RAM Preview in real time

Recently I have started working on a new project and can't work on it because my RAM Previews are not in real time anymore. I have only had this problem since I started this project a few days ago. Every other project I have done I've never had this problem before.
I have 10 GB of ram allocated to After Effects, my clips are in 59.94 fps which I have set the composition to as well. When I ram preview it tells me 50.019/59.94 I know what this mean, I understand it's telling me to change my composition's frame rate to 50 frames, however if I do this then music plays too slow. Right now my problem is that the clips aren't playing fast enough for me to see if my editing and time syncing is acurate. When I render the video everything is synced up fine but this is making my editing very inconvenient and I would like a fix please. I tried: Clearing my disk and media cache, unchecking "render multiple frames at once", taking off all effects on the clips, using different clips, AND even reinstalling After Effects CS6 but nothing has worked. I really badly need a fix to this problem. Any help would be greatly appreciated thanks!!

> The clips are in 59.94 frames, so the composition is in 59.94 frames. If when I upload to the internet it goes down in frame rate so be it.
You are misunderstanding the typical video workflow.
Composition setting are supposed to match the characteristics of the intended output, not necessarily the characteristics of the imported footage. This is how you ensure that what you preview exactly matches what you output and what your viewers will see. Consider, also, that most compositions use assets with many different frame rates, sizes, etc.
> I do have a large monitor but I've been using this monitor since December and haven't had a problem with it until now.
Great. But you're having a problem now. And it's because of a bottleneck somewhere between your RAM and drawing the pixels to the screen. One more reason that this might be happening is that you're running a GPU-heavy application; note that web browsers can also be GPU hogs these days.

After effects CS5 crashes when Previewing or rendering

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I have installed the same copy of After effects onto my laptop and it works fine - the laptop is running OS 10.6.2 and my main machine is running 10.6.3
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Mylenium you are a star!
I'm not sure which one of your answers it was but it was one of two things. I deactivated all my fonts as well as removing the quicktime codecs from my quicktime pro 7. It may have been that i have recently added a second HD to my mac from an older mac that also had quicktme on it as i removed the codecs from that also and it all works fine now.
Thanks a bundle for your help
Terry

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After Effects CS6 keeps crashing on playback

AE keeps crashing while I playback or render a composition. It actually saves before it crashes most of the time but it is happening a little to frequently.

Thanks for your Reply Rick
Mac Pro
Mac OS X (Version 10.7.5)
Processor: 2 x 2.4 GHz Quad-Core Intel Xeon
Memory: 16 GB 1066 MHz DDR3
Graphics Card: ATI Radeon HD 5770
I am running version 11.0.1.12. I actually saw that there was an update for 11.0.2 but it doesn't show when I go the Help > Updated route and when I download it directly it doesn't install because of an unknown error.
The project is a motion graphics piece containing a lot of shape layers, nulls, and some imports of tiff sequences from Cinema 4D. It tends to crash when I'm trying to playback using the space bar to check timing of the piece or when I let it play on a ram preview loop.

After effects & Adobe Bridge preview Issue *freezing*

Hello all,
I wanted to begin learning After Effects CS4, unfortunately Adobe Bridge CS4 is halting my education.
If I explore any kind of After effects CS4 preset, and preview it inside of Adobe bridge, my pc freezes. The preview window, within Bridge CS4 turns blank white while it freezes,
the Windows toolbar of Adobe bridge, says not responding temporarily, if a wait a little while around 30-45 seconds I regain control of my pc again, the preview box occasionally will show a still image and sometimes it will stay white or flicker. If I do wait the 30-45 seconds the toolbar window no longer says 'not responding' I can click to a (non) After effects preset folder, (for example) 'My family pictures' and it will operate normally but if I go back to the After effects CS4 presets again the freezing will occur once more.
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I am a Windows vista user, also I have enough RAM I believe, just over 3 Giga
I dont know how useful the info is on my Pc spec is, but I thought it could be worth mentioning.
I have looked for a few hours to find some kind of thread with a similar problem I have been unsuccessful, I hope someone can help
Kindest regards Julian

Hi Curt y,
I do have the latest Quicktime player installed, I would'nt have have thought that would halt me previewing CS4 after effect still shapes and backgrounds? but.. I'm not to sure if I'm honest.
well I tried uninstalling and reinstalled my player still no sucess sadly.
do you know roughly what date all these old threads popped up?
I'm going to scavenge for them anyway in the the hope I find something useful. *must be positive*
thank you Curt y, for giving me some of your time.
regards Julian

Preview in After Effects CS6

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Thank very much!! master ! I can continue now, thank you!!

Check if After Effects is RAM Previewing

Is it possible to check, from an effect, if After Effects is in RAM preview mode or not? - i.e. you've hit '0' on your keypad and AE starts playing back, RAM caching frames, etc.
I'm guessing this is not possible, since I've searched the AEGP headers for 'RAM', and also the documentation, and there's nothing to go on.
The one shred of hope that just maybe I might be able to access this bit of info, is that there are a few AE preferences that rely on knowing the status of how something is being rendered, for example the Video Preview prefs Output During: Previews, Interactions, Renders.
I wanted to add an option to prevent certain elements from being rendered during previews, but always render during interactions.
Thanks,
Christian

well, one way to go would be to use an AEGP plug-in which would intercept
the preview command.
i don't know if there is such a command and if it's guaranteed to
intercept, but you could use command_hook with the "all commands" option,
and see what you catch when you hit 0.
if so, then your effect could communicate with the AEGP to ask for the
state.
if you give up on ram previews and care only for queue renders, then you
could check the queue state during the render call.

After Effects 7 with ATI Radeon X1900 XT

Hi everyone,
I use Adobe After Effects 7 a lot and I'm not happy with my current machine (PowerPC G5 2x1.8GHZ, 2GB DDR SDRAM, ATI Radeon X800 XT), it is too slow to work smoothly when I have several layers and effects going on. Previewing the work on the timeline (OpenGL or Adaptative resolution) is painfully slow and takes on my nerves. I believe this is mainly due to my graphics card, and the fact is not 100% compatible with OpenGL on After effects.
I'm ready to upgrade with a Mac Pro 2.66 GHz Quad Xeon with ATI Radeon X1900 XT, but only if I'm going to enjoy a real improve with After Effects 7, as this is my main editing application right now.
Does anybody have experience with this configuration?
Thanks in advance for reading and replies!
PowerPC G5 2x1.8GHZ Mac OS X (10.4.7) 2GB DDR SDRAM, ATI Radeon X800 XT

I have this configuration, but sadly have had no time to play around with After Effects. AE's realtime playback capabilities are limited (especially when compared with something like Motion), so you're probably still going to be rendering to RAM a lot. I believe the OpenGL support is for things like anti-aliasing, blur, and blending modes -- so a faster video card may not automatically equal huge performance boost across the board. Four Xeon cores and a lot of RAM will help it a lot more (see exception below).
Also, AE 7 still has to run under Rosetta which results in a slower performance than if it was native. Also, be aware that there is a limit placed on all Rosetta processes that do not allow them to address more than 1.5GB of RAM combined. This will most likely limit your render speed and preview lengths. See this thread on Adobe's forums for more info:
http://www.creativecow.net/articles/jonesgraham/AE7_on_IntelMacPro/index.html
EDIT: The above link was to the performance comparisons, but not the original Adobe forum thread. Here it is:
http://www.adobeforums.com/cgi-bin/webx/.3bc2401b
However, if you read the thread, and follow the link in it, the author is seeing huge performance gains with AE7 on his MacPro 3GBs over his old dual G5 4.5GBs.
So most likely, you'll see a performance benefit from upgrading. And when an Intel native version of AE ships, things will really fly.

After Effects CC 2014 only using 30% of CPU when rendering

I've scoured the internet for details but there's surprisingly little help when it comes to After Effects and performance.
Basically, I built a new workstation awhile ago with the hopes of really speeding up my video editing as I was starting to do a lot more. Here are the specs:
Core i7-4930k
32 GB RAM @ 1600MHz
Stock GeForce 780
Samsung 840 EVO 500GB OS drive
Crucial 240 GB SSD for Scratch Disk
3TB WD Red for Mass Storage
Windows 8.1
I must say that I've been quite disappointed so far with the setup when it comes to the CPU, especially After Effects. I would think the 6 core would greatly outperform my old 4 core, but I've found hardly any performance improvements, and in fact have seen it perform worse in a number of situations. And I think the issue is that somehow, After Effects is not fully using the CPU. Whenever rendering or previewing, all 6 physical cores as well as the 6 logical cores hover around 30% usage. Never any more. And yet, the comp it's rendering could be chugging away at maybe 2-3 frames per second, and it could clearly go faster with more CPU usage. Heat isn't throttling anything as all the cores are still at a very cool 48-50 C, and this is just pretty basic air cooling. It's definitely not being pushed that much.
I don't think it's the CPU itself as Maya gladly takes up as much CPU as possible and my render times on that have improved dramatically. After Effects however (and Premiere when not using GPU effects) can be quite slow. It's especially frustrating when other older, clearly slower computers end up rendering my comps faster.
Is there any info at all out there as to why this is? Any advice on troubleshooting? I've tried many things and can't think of anything short of maybe it being an OS issue and having to reformat (which would be quite a pain).
Any and all help would be greatly appreciated.

Martin, I don't know if there's anything Todd or I can say to change your opinions. We try to represent how After Effects works, and why the After Effects team chose to make it work that way, in a way that all users can understand so you can get back to creative work as fast as possible.
What tends to rub us the wrong way are your assertions and accusations about that. For example:
If you guys spent less time listening to the voices you want to hear, and more time on the 'yes some time difficult to hear' but nether the less valid concerns of experienced users, you would have addressed this fundermental flaw years ago.
We gave constructive feedback whilst part of that program and none of it was ever addressed. There seemed to be a weird attitude to any criticism which didn't fit the given narrative.
I'm sure you probably see it differently and it is great to hear it is being addressed.
That last statement is quite true, your perspective is your own. From our perspective, your statements do not reflect how the After Effects team interacts with After Effects users, either the users in our prerelease program or users who are not a part of that program. Fact is that we spend a lot of time talking with users: in forums, at user groups, on the phone, via email, and by visiting work sites. We take notes and discuss as a group what we learned, and use that feedback to guide the future development of After Effects. It's not all sunshine and roses, we hear plenty of negative things about After Effects. This is important as it helps us understand how to make After Effects better. At the same time, we're also cognizant that we have many different types of users with different needs and workflows, and we can't make all users happy all of the time.
What I think is not visible to you, or to most After Effects users, is how we prioritize the development of After Effects. There are many factors that go into that, starting with input from users but also including (in no particular order) fixing bugs and general improvements, industry trends, changes in hardware and software environments, maintaining a large and complex codebase (some of which is shared with other Adobe applications), maintaining interoperability with other applications (both Adobe and non-Adobe), and ultimately delivering a product that people want to use. To see how all that comes together is harder to communicate; really, you would need to sit down with us and watch us work.
The more relevant point here, Martin, is that you appear to disagree with how much priority we've given to performance improvements in After Effects. You indicate that you would prefer that we had started on this work a long time ago.
All work we do in After Effects comes at the cost of work we don't do. I'm confident that you're like me in that you have a long list of enhancements, beyond performance, that you'd like to see in After Effects. But the After Effects team is relatively small for such a complex application, and the scope of the performance-related improvements we are currently making is huge, a massive re-wiring of the application. Doing this work in a reasonable amount of time, with the number of people that we have, with as few moving parts as possible, is tricky. In that context I hope you can see that it has not been easy for us to justify putting the entire team on this effort and doing no other work, no creative features, no workflow improvements, no fixing of long-standing bugs and gotchas, etc. What is important is that this work is now in progress.
On that note, I need to temper any expectations that you may be building based on this conversation. We're laying the groundwork for the future of After Effects, and the first iteration of performance improvements that you see next year might not meet your expectations if we hype it up too much. We plan to share specific detail when we get closer to a public release, but suffice that what we are doing now is absolutely necessary for even better things to come later.
We understand your frustrations, that you'd like After Effects to be faster. We're working on it, and we appreciate your patience. We also appreciate constructive comments and questions.

How to enable sound scrolling in After Effects?

So basicly what im trying to do is be able to scroll through my compisition with the mouse and hear sound like in Sony Vegas is this possiple? So if i drag my mouse over footage sound will play. Also can you enable keyframes on a mask?
Thanks so much!
Cam

According to this page in the Adobe Help you can preview audio by ctrl+alt+drag the current timeline indicator. It also has a lot of other useful info about previewing in AE.
Now, keep in mind, previewing audio and video in AE is very different from non-linear editors like Vegas. Rick Gerard had a good explanation for this:
Sony Vegas, Premiere Pro, Final Cut, Avid are all NLE's (Non Linear Editors) and they are specifically designed to playback a video stream. With any of them, if you stack enough layers or effects on the video they will have to render a new video stream based on pixel based calculations for every pixel in the stack. This rendering, especially for HD sources or for complex plug-ins, will take quite a bit of time.
After Effects, Flame, Fusion, Shake -- are all pixel based image processing applications that act very much like Photoshop. They calculate the values of every pixel in every frame, come up with a new pixel, and then play those pixels back as a video stream. More importantly, AE and all the other pixel based compositing apps, always work internally with completely uncompressed pixel data. NLE's rely on codecs and in some cases, hardware, to playback the video. It's an entirely different way of working with moving images.
In After Effects you enable the preview by loading a bunch of frames into RAM then the video stream is played back. You start the process with the 0 key on the numeric keypad and not with the Space Bar as you do in nearly every NLE ever created. The length of the preview depends entirely on how much free ram you have available and it takes some time to generate these new pixels. The more layers, the more effects, the more calculations that need to be performed the longer it will take to process the RAM preview. There's currently no way around this rendering time. A modern NLE will handle an amazing number of video streams simultaneously, but as soon as you exceed the capability of the system you're stuck with a render. Most NLE's, given the same number of calculations, actually take a little longer than After Effects to do the same kind of effects. Open GL, and other GPU acceleration helps many NLE's achieve higher performance but it has yet to be implemented into a pixel based compositing app. The sad truth of the matter is that if you want to do compositing in any of the available compositing apps, you have to wait for renders. They are getting better. Memory management and efficiency is improving. GPU accelerated effects are being added, but for now, that's about as good as it gets.
I hope this helps. As long as you use After Effects to create shots and don't try to make it do the work of a NLE you should be fine. Movies come from NLE's, amazing shots come from AE.
- Rick Gerard
This page has links to lots of information about animating masks and shape layers.
It sounds like you're a beginner in AE. You should really start here to get a foundation in the basics before you just jump into it.

After Effects vs PP CS3?

Does After Effects have more RT preview power than PP CS3?

Christian,
Thanks for the info. I think Premiere Pro may have a better RT system for the way I like to edit.
Jim,
I have a core 2 dual and a Dual Core P4. The RT previews that have scaling (PIP and some transitions)will not look great no matter what because the RT preview mode is of much less quality than the rendered version. Getting a faster system (quad core) is not going to help. Because of the RT preview method the PIPs look better if I select deinterlacing to the PIP clip. The PIP would look better on any system (even a quad core) if deinterlacing is applied because of the RT method used by Adobe. This would not be the case if they opted for cubic linear sampling but I think it requires to much CPU power over the blinear resampling.
You can even talk to the techs at Adobe. I even took a sentence out of the manual to prove my point!
Have you tried deinterlacing a PIP clip on your system? If you would just do as I ask I imagine you would say. "Medeamajic I see what you mean. The PIP clip does look much smother if deinterlacing is apllied to the PIP clip for RT previews". This is because of the RT method used by Premiere Pro. A faster system will make no difference.

After Effects error: Unable to allocate space for image buffer

I am having some glitchy issues with After Effects, very inconsistent, but I am getting the error message "After Effects error: unable to Allocate Space for a 7500 x 4500 image buffer. You may be experiencing fragmentation. In the Memory and Multiprocessing Preference dialog box, trying increasing the RAM to leave for other applications, and selecting the Enable Disk Cache option in the Media & Disk Cache Panel".
Pretty straightforward, but I have a brand new 8 core dual 2.25 Mac Pro with 16GB Ram. I have it set to allow other applications to use 7GB, have jockeyed that setting between 1GB and 5GB and still gotten the same error message. Disk Cache is set to 3GB, have pushed it all the up to 7GB and still gotten the same message. I am working in 1080p, but I got the error message with Open GL on, quarter resolution, and wasn't even trying to RAM preview. I also noticed that with a straight 1080p clip .mov animation codec clip, after effects will only RAM preview about 7 seconds. That is without any other layers or effects. I do not have all of my source footage in one folder, I am going to try that next. I am running of a fast internal hard drive that is not they system drive. It also seems like it happens after I have been using the comptuer for awhile. If I restart the problem will usually go away for a little while.
I think that I may have a bigger system error, the computer locked up bad once after I had it for a few weeks and since that happened CS4 has been unstable in general, especially Photoshop and Bridge. My guess is bad RAM, but I wanted to make sure I wasn't missing something with my AE settings. If any one has any input please let me know. Thanks.

> I lowered the minimum RAM per core to 1GB, because the Adobe site recommends that as a base setting for andHD project
When you say "the Adobe site recommends", what exactly are you referring to? If you're quoting recommendations written for After Effects on the Adobe website, you're very likely quoting me. And this is what I wrote in the Help document:
"Memory & Multiprocessing preferences":
"The amount of RAM required for each background process varies depending on your system configuration; at least 1 GB per process is recommended. Optimum performance is achieved with computer systems with at least 2 GB of installed RAM per processor core."
This blog post gives essentially the same advice, but with more explicit suggestions.
But, as I say at the bottom of that blog post, if you find that some other settings are working better for you, that's great. Every project and computer system are different. Do what works for you.
> Also, if it is an
dual quad core system, there should be 8 cores, but in the
multi-processer preferences panel it lists CPU's as 16.
The number of "virtual" processors can be double in a system that uses hyperthreading. After Effects doesn't actually treat these as separate processors in this context, though.

After Effects CC sluggish "Fast Preview" playback

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