Slow/choppy playback - cache buffering issue
On playback, PP6 randomly slows down and plays back choppy on visually complex shots. It takes repeated stops and starts to clear it out. I have troubleshot the life out of this, read every relevant thread, and tried everything imaginable to fix it. Windows 7 pro is fully optimized. There are no software conflicts (installed a drive with only windows and CS6) I’ve got plenty of horsepower - 3930K in an asusp9x79pro, gtx 670 w/4mb, 32mb ram, OC to 4.5. Eric Bowen at ADK has personally tuned the system and done a manual overclock. Memtest confirms the ram is fine. There are no hardware issues. Dropped frame indicator stays green, no dropped frames. Switching from hardware to software mercury playback does nothing. Rendering has no effect, nor do any playback settings. It happens with AVCHD and h.264 mp4’s as well, on short clips, not just long ones. It does not happen outside of ppro. Since I have eliminated hardware and software issues, all this leaves is Premiere.
As Eric explains it, it is a cache buffering issue, related to how the nvidia card and ppro interact, and he sees it frequently enough. I can't do his explanation justice, but he has offered to jump in and provide more detail if need be.
Whatever it is, it’s ridiculous. It is totally unacceptable to play down a sequence and have it intermittently slow down on a system with this much power that has been properly set up by a pro. It’s a shame, because it’s the only thing from keeping ppro/cs6 from being the best platform I’ve edited on in my 12 years as an editor.
I’ve filed a bug report, but gotten no response. If others are seeing it, and can file a bug report, maybe it will be publicly acknowledged and resolved.
https://www.adobe.com/cfusion/mmform/index.cfm?name=wishform
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