Yes, yet another mysterious choppy, jerky playback out-of-the-blue issue.
Premiere Pro CC 7.01, Mac, was working relatively fine for a few weeks on a couple projects. Now, on new project, exact same setup and media as before, I get playback that is fine, then after a few moments or a minute, gets choppy, as my CPU becomes increasingly pegged, as if GPU acceleration becomes disabled with time. Cannot edit when it is like that. I give it a rest for a few moments, can play ok for a minute, then CPU and choppiness creaps up again.
Premiere Pro CC 7.0.1
Mac OSx 10.8.2
Nikon D800 and D7000 .mov files, 1920-x1080 23.976fps, High Quality
Sequence: DSLR 1920x1080x23.976fps
Project: Mercury OpenCL GPU (via AMD Radeon 6770m in Macbook Pro.) No change if switch to Software Only.
Premier Pref/Memory: either Optimize for Performance or Memory, and restart. No effect.
Playback Resolution: 1/2. Always worked before.
No other software running. (Time Machine enabled, not backing up. Crashplan paused or service unloaded did not help.)
When CPU pegs, it is kernal_task and Premiere at top of All Processes/%CPU table in Activity Monitor.
Macbook Pro, late 2011, quad-core 2.5 GHz i7, 16GB memory. Apogee Duet2 audio output.
Source files and cache files and preview files on Pegaus Raid on Thunderbolt. NEC monitor on Thunderbolt. Premiere on internal drive.
No complex layers, effects. Just straight video and 2-4 tracks of audio. So little to no Previews rendered. Timeline bar is yellow, which always played fine (via OpenCL.) Rendering Previews of a few minute section does not help.
Happens whether doing multicam sequence or simple cuts.
Cleaned media cache (Premiere/Prefs/Media/clean cache.) No Previews to clean out.
Graphics Switching disabled, so always on Radeon.
Only Changes since it was working -
CC app update (i.e. the menu bar thing, but I usually Quit that anyway.)
Indesign CC, Extension Manager update (but never launched.)
More memory allocated to Crashplan (but if I pause or unload that service no effect. And memory does not seem to be an issue looking at Activity Monitor.)
Checked Files on and rebuilt Thunderbolt raid directory (with DiskWarrior, just as general maintenance.)
Apple Timecapsule firmware updated to 7.6.4.
Maybe Java updated to v7 update 25 during that time.
Thanks,
Vincent
