Jumpy playback from image sequences rendered in Apple Prores and then exported to h264

Question

I will start by saying I have been using FCP since 1.0 and am in no way new to this software, but this issue has me going crazy.
First the Specs:
MacPro 2 x 2.66 Quad cor Intel Xeon
16 gig Ram
OS 10.9.2
FCP 7.0.3 (sorry but I am not a fan of FCP10 at all)
In other words, a beast of a system that has played back everything I have ever built on it for years until now. So now for the issue: I work with an amazing 3D Max builder and we have created a building animation exported from that program into and image sequence ( we have tried JPG, TGA and PNG still all with the same effect). I open Quicktime 7 Pro, build the image sequence, save as .mov, import into FCP and drop it into my 1080p30 Apple Prores (HQ ... we also tried SQ) timelines. The timeline renders perfectly and I can play the video perfectly through my system out of Firewire 800 to my Motu V4HD device which then converts the signal to HDMI to my 55" LED TV. The video and playback is perfect.... until:
If I try to play back the same exact time line into an exported video file, the file will play back with random jumpyness in it. I say random since you can play it back 10 times and it will hiccup during playback at different spots in the video. If you review every frame in the file though using Quicktime 10, 7 or VLC viewer, every frame is perfect. So, it must be the data rate right? Wrong. I have exported now to H264 MP4, M4V, MOV , ect, etc at different data rates from 4mb to 40 mb per second. They all have the same randow jumpyness to it. So it must be my computer right? Nope. I have a Macbook pro that is more powerful than this machine and I rebuild the file using the same method (something I have done a thousand times before) and the exported file does the same thing on that machine. I had my friend do it on his machine... same thing. ERRRR....
We have even tried using After Effects and Premier to the same result. Rendered it straight from Quicktime Pro, same. Rendered it to 720p30, same. Render it to 24fps, same. I had another editor render it using whatever methods he wanted to use... same. Tried Compressor, SAME.  Tried Adobe Media Encoder, SAME......We even, god forbid, used a PC running Premier and built the image sequence and rendered to h264 at 30fps, 5mbs.... @#$@#$ SAME!
We just remade the 3D Studio Max export into a 60fps animation since I thought that the individual frames we appearing too far apart and thus causing the jumpyness. That was causing the playback of the upclose objects flying across the screen fast to appear jittery, but not the random playback jumps. The 60fps did smooth out the animation greatly during fast flybys, but the playback jumps are still there in all players, QT, VLC, the web, etc.
I was starting to think this issue is realted to Mavericks, but since the PC did the same thing that is not it either. I have linked a sample of the clip below exported to 720p30, 25mbs... something that is much smaller than the original and should playback smooth very easily on any of my systems.
FYI: I have now opened numerous projects I have edited over the last few years and noticed that all of them are now jumpy, so this isn't just an image sequence issue. While the other projects don't use image sequences and instead are shot footage edited together, there is still the random jump (far less than the image sequence as you will see) but they are now there... ***? I have cleared preferences in FCP which helps for a short period of time, but once exported I get the same glitch.
As I said... I am stumped... ANYONE have ideas for me to try?
Here is a sample file for you all to see and please tell me if anyone does not see the issue after playing it several times in a row.
www.media3lv.com/switch/NORTH-sample-720p30_25mb-sec.zip
One last thing to note... my main goal for these videos is YouTube or Vimeo playback via our company website. I have a few other animations online right now using YouTube and the problem is also showing there. At first I thought it was just my videos, but I have looked at numerous YouTube videos now showing 3D animation and alot of them are jumpy.
www.supernap.com/supernap-building-design.html
www.supernap.com/supernap-tscif-exchange.html
These don't show the issue as bad since the camera fly is much slower, but why is this occuring and is it coming from my source, or is this a known youtube issue? I can program this using out own modules, but YouTube and Vimeo allow for multiple resolutions and a checker script which makes it easier to share over all devices at all quality up to 1080p.
Advice is welcome and appreciated?

Answer 1

I have tried at actual, full screen, using 1080p30 size from the original compressed to 4mbs (something my system can handle without blinking), 720p30, etc. etc. etc.  Nothing stops the jumps. Even the activity monitor shows only 5%-15% processing being used by QT and/or FCP.
I plan to pull my old G5 out of the closet, it runs 10.6.8 and is still rock solid for video editing in FCP7.  If it plays smooth on that 8 year old system then I know it's Mavericks. I'll try that tonight. It floors me though why the original 1080p30 will playback perfect via FCP and Motu, but once I turn of external monitoring and just try to play it via the preview monitor it is jumpy as **** and then the exported file does the same thing.  So strange.  I even deleted prefences of FCP and that does help with screen playback initially, but it always gets jumps in it after playing for a while.
I knew I should not have started using Mavericks and I HATE FCP10.