Imported from camera hard drive using PlayMemories Home
Ideally you should only be using Windows Explorer to copy the entire PRIVATE folder from the camera to your hard drive, and then use PP's Media Browser to import.
I've tried several more things.
The playback does not freeze if I have only one clip in the timeline.
If I have clips on two or more video tracks, it starts freezing.
Once I clear it down to one video track, it takes a couple of seconds (up to 30) to start playing normally again.
Sometimes I can play two tracks for several minutes before it freezes. Sometimes it freezes immediately.
When I open Premiere, I get the "Media Pending" screen for way longer than usual.
I have rebuilt the peak and cfa files, no difference. GPU accelerator is enabled. The latest Adobe updates are installed.
I see a few other forums with similar problems but no solution.
No settings, file formats, or file locations have changed since Monday (the last time CS6 was working properly). After a lot of digging around I found that a Windows Defender Definition update was installed the morning of the day PP started freaking out. I can't get rid of this update.
I edit two or more hours of footage per day. They are lectures, so they are recorded in 1-3 hour chunks. I use two videos simultaneously--one with the professor's powerpoint presentation, and one of the professor. I keyframe the PPT video into the corner, overlaid over the lecturer. I did this for years without problem in CS5.5 and for two months without problem on my current setup.
I have had the same problem and my solution is maybe not the best, but I didn´t had the time to search around any longer...
I took my .mts-file (AVCHD) into the Media Encoder and used the same resolution 1920x1080 and converted the file to a H264.
Now the file runs like a day in the park and I can get the job done. The film is for the web so I recon the loss in picture quality will not be to obvious.