Lightroom slower when GPU acceleration is enabled

My graphics card is OpenGL compatible and it is shown in the preferences under performance.
When the GPU setting is turned on my develop module is extremely slow. Turning it off is faster and more like LR 5 performance.
All the hype about GPU acceleration and in reality is slows me down.
I've also noticed then if you have an image open and then open the preferences windows and toggle the GPU setting on and off, the image changes.
When I say changes, I mean the image becomes lighter or darker as if the exposure or whites/blacks is being changed.

I agree with Adamnz. I have a slightly older system but using CC 6 is like going back to the early releases of 5.x when the clone tool was jerking around the screen.
Painting with a brush and the mask showing makes the lag time visible.
Jerky tool movements... like trying to paint with Parkinson's.
Screen blackouts while refreshing images.
Slow screen refreshes between images.
CPU usage slightly higher (60%) with GPU enabled
But since this version created a "New and Improved" catalog I can't (i don't think) go back to 5.x...
BTW, I have been waiting for a call back from support for an hour when the stated call back time was 25 to 30 minutes... Not Good.
Here are my specs in case Adobe is listening....
Lightroom version: CC 2015.0.1 [ 1018573 ]
License: Creative Cloud
Operating system: Windows 8.1 Business Edition
Version: 6.3 [9600]
Application architecture: x64
System architecture: x64
Logical processor count: 8
Processor speed: 3.3 GHz
Built-in memory: 16366.4 MB
Real memory available to Lightroom: 16366.4 MB
Real memory used by Lightroom: 3261.9 MB (19.9%)
Virtual memory used by Lightroom: 3324.1 MB
Memory cache size: 1469.4 MB
Maximum thread count used by Camera Raw: 4
Camera Raw SIMD optimization: SSE2,AVX
System DPI setting: 96 DPI
Desktop composition enabled: Yes
Displays: 1) 2560x1440, 2) 2560x1440
Input types: Multitouch: No, Integrated touch: No, Integrated pen: Yes, External touch: No, External pen: Yes, Keyboard: No
Graphics Processor Info:
GeForce GTX 560 Ti/PCIe/SSE2
Check OpenGL support: Passed
Vendor: NVIDIA Corporation
Version: 3.3.0 NVIDIA 350.12
Renderer: GeForce GTX 560 Ti/PCIe/SSE2
LanguageVersion: 3.30 NVIDIA via Cg compiler
Application folder: C:\Program Files\Adobe\Adobe Lightroom
Library Path: D:\Pictures\Lightroom\Lightroom Catalog.lrcat
Settings Folder: C:\Users\Dim\AppData\Roaming\Adobe\Lightroom
Installed Plugins:
1) Behance
2) Canon Tether Plugin
3) DxO Optics Pro 9
4) DxO Optics Pro 9 Importer
5) Facebook
6) Flickr
7) Leica Tether Plugin
8) Nikon Tether Plugin
Config.lua flags: None
Updated Toolkit: Adobe Camera Raw 9.0 for Lightroom 6.0 (build 1014445)
Updated Toolkit: Book Module 6.0 (build 1014445)
Updated Toolkit: Develop Module 6.0 (build 1014445)
Updated Toolkit: Import Module 6.0 (build 1014445)
Updated Toolkit: Library Module 6.0 (build 1014445)
Updated Toolkit: Map Module 6.0 (build 1014445)
Updated Toolkit: Monitor Module 6.0 (build 1014445)
Updated Toolkit: Print Module 6.0 (build 1014445)
Updated Toolkit: Slideshow Module 6.0 (build 1014445)
Updated Toolkit: Web Module 6.0 (build 1014445)
Updated Toolkit: com.adobe.ag.AgNetClient 6.0 (build 1014445)
Updated Toolkit: com.adobe.ag.AgWFBridge 6.0 (build 1014445)
Updated Toolkit: com.adobe.ag.Headlights 6.0 (build 1014445)
Updated Toolkit: com.adobe.ag.LibraryToolkit 6.0 (build 1014445)
Updated Toolkit: com.adobe.ag.MultiMonitorToolkit 6.0 (build 1014445)
Updated Toolkit: com.adobe.ag.archiving_toolkit 6.0 (build 1014445)
Updated Toolkit: com.adobe.ag.bridgetalk 6.0 (build 1014445)
Updated Toolkit: com.adobe.ag.catalogconverters 6.0 (build 1014445)
Updated Toolkit: com.adobe.ag.cef_toolkit 6.0 (build 1014445)
Updated Toolkit: com.adobe.ag.coretech_toolkit 6.0 (build 1014445)
Updated Toolkit: com.adobe.ag.curculio 6.0 (build 1014445)
Updated Toolkit: com.adobe.ag.discburning 6.0 (build 1014445)
Updated Toolkit: com.adobe.ag.email 6.0 (build 1014445)
Updated Toolkit: com.adobe.ag.export 6.0 (build 1014445)
Updated Toolkit: com.adobe.ag.ftpclient 6.0 (build 1014445)
Updated Toolkit: com.adobe.ag.help 6.0 (build 1014445)
Updated Toolkit: com.adobe.ag.iac 6.0 (build 1014445)
Updated Toolkit: com.adobe.ag.imageanalysis 6.0 (build 1014445)
Updated Toolkit: com.adobe.ag.layout_module_shared 6.0 (build 1014445)
Updated Toolkit: com.adobe.ag.pdf_toolkit 6.0 (build 1014445)
Updated Toolkit: com.adobe.ag.sdk 6.0 (build 1014445)
Updated Toolkit: com.adobe.ag.sec 6.0 (build 1014445)
Updated Toolkit: com.adobe.ag.socket 6.0 (build 1014445)
Updated Toolkit: com.adobe.ag.store_provider 6.0 (build 1014445)
Updated Toolkit: com.adobe.ag.substrate 6.0 (build 1014445)
Updated Toolkit: com.adobe.ag.ui 6.0 (build 1014445)
Updated Toolkit: com.adobe.ag.video_toolkit 6.0 (build 1014445)
Updated Toolkit: com.adobe.ag.xml 6.0 (build 1014445)
Updated Toolkit: com.adobe.wichitafoundation 6.0 (build 1014445)
Adapter #1: Vendor : 10de
D

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Please speed up Lightroom using OpenCL/GPU acceleration and/or AVX support!

Hello,
for those, who don't look at the feature request site:
http://feedback.photoshop.com/photoshop_family/topics/please_speed_up_lightroom_using_open cl_gup_acceleration_and_or_avx_support
Hello,
I enjoy using LR. But there is still one thing that lacks: Performance, especially in the Develop Module and Zooming...
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I just think that we have the hardware possibilities to improve speed and LR should take advantage of this.
Kind regards,
Christoph

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fritz wrote:
shadyabhi wrote:I would be glad if anyone will share older package here.
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How did I get better compression when using GPU acceleration?

Hello,
I was just making a short, 1:12-long video encoded as H.264 in an MP4 wrapper. I had edited the video in Premiere Pro CC, and was exporting through Adobe Media Encoder at a framerate of 29.97 FPS and a resolution of 1920x1080. I wanted to do a test to see how much GPU acceleration benefits me. So, I ran two different tests, one with and one without. The one with GPU acceleration finished in 2:09. The one without it took 2:40, definately enough to justify using GPU acceleration (my GPU is an NVidia GTX 660 Ti which I have overclocked). I am sure my benefits would be even greater in most videos I make, since this one had relatively few effects.
However, I checked the file sizes out of curiosity, and found that the one made with GPU acceleration was 175 MB in size, and the other was 176 MB. While the difference is pretty small, I am wondering why it exists at all. I checked the bitrates, and the one made with GPU acceleration is 19,824 KB/s, whereas the other is 19,966 KB/s. I used the exact same presets for both. I even re-encoded the videos again just to test it and verify the results, and the second test confirms what the first showed.
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As I said in my original post, I did test it again. I have also ran other tests, with other sequences, and they all confirm that the final file is smaller when GPU acceleration is used.
Yes, the difference is small but I'm wondering how there can even be a variable at all. If you put a video in and have it spit it out, then do that again, the videos should be the same size. It's a computer program, so the outputs are all based on variables. If the variables don't change, the output shouldn't either. For this reason, I cannot believe you when you say "I can, for example, run exactly the same export on the same sequence more than once, are rarely are they identical in export times or file size."

Artifacts with Mercury GPU Acceleration.

Hello there,
I hope someone will be able to help me with a problem that has just started to occur on my PC.
I have Premiere Pro CS5 (5.0.3). When I have the renderer switched to "Mercury Playback Engine GPU Acceleration" in project settings all my clips at 50fps playback with a green flickering line and blocky artifacts at the top of the frame. When GPU acceleration is switched off the problem is less noticable but there is still a line of pixels at the top of the frame that glitches. The artifacts are present when playing clips in the viewer as well as in the timeline.
I am in the middle of a music video which uses a lot of slow motion and until a few days ago this problem did not exist although playback was sometimes choppy and had crashed a couple of times recently. I have 6gb RAM and am editing native 720p footage from a canon DSLR. Clips shot at 25fps in 1080p playback without issues either with GPU off or on.
My graphics card is a Nvidia GeForce GTX 285 and the drivers are fully up to date.
Please help me out if anyone knows what the issue could be.
Thanks very much
Dan

>GeForce GTX 285 and the drivers are fully up to date
I think you should not use an nVidia driver any later than 296.10
Do NOT use 306.97 http://forums.adobe.com/thread/1084197
When you install 296.10 be sure to NOT select auto-update

Preview slower with hardware GPU acceleration enabled than software only?

Sorry if this had been asked before.
But somehow my preview/playback was slower and choppy once I enable the hardware GPU acceleration(I mean I select the 'mercury playback engine gpu acceleration' under Project-Settings-General')
I followed the following tips to enable my graphic card, (thanks David)
http://www.studio1productions.com/Articles/PremiereCS5.htm
I was working on a clip of approx 3 mins long with majority of the footage(1920 and 720) from a DSLR, some 1920 clips from gopro hd2 and some 1440 clips from a P&S camera(scale to 1920 to match the sequence setting). main effects applied (magic bullet looks).
Before I enabled my graphic card and selected it from the project setting, the preview was ok, nearly smooth all the way except some sections with dynamic links, but once I turn it on, the preview became ridiculously choppy, I couldn't believe my eyes, so I turned it off (select mercury playback engine software only), did playback again, it became much smoother!(or just as smooth as it was when it was under that setting, it's just that comparison gave me a bad impression of my hardware gpu acceleration).
btw: I'm running on a low spec laptop
Core™ i7-2670QM 2.2GHz turbo to 3.1GHZ
8GB DDR3 memory
NVIDIA GeForce 555M 1GB graphics
750G HDD(I partition to 150G system drive and 600G media drive) 5400RPM (I know, it's slow)
currently have about 80G and 400G empty space on two drives respectively.
15.6” HD display (max resolution 1366x768)
I know the machine is not a proper workstation to work with CS6, but the hardware gpu acceleration was slower than the software only gpu acceleration was beyond my understanding, not a minor difference we are talking about, it was much much slower!
Have I done something wrong?
Any tips would be appreciated.

Here's my guess.
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GPU Acceleration for Lightroom

When will Lightroom have GPU acceleration like Photoshop CS4 has?

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