Bug: trying to move the white play line/head within a clip takes a very long time (30-60s)
I have a bug and I think I know how to partially resolve it (but don't know what caused it in the first place).
When I try to move the white vertical line on the timeline, I have to wait for a long time for the action to complete. Express will be unresponsive during this time and Task Manager will show very little CPU usage. I can move the white vertical line to the ends of clips using Page up/down, Home and End and these actions will complete instantly unless the line ends in the middle of a video clip due to an audio clip starting or ending within a video clip.
The solution or work around to resolve the problem for the video files is to right/context click on the affected video sources in the Media tab and select 'Relink...'. The choose the correct video file. Do this for each affected clip. But this isn't working for all the audio files. I re-link those and the problem remains that if I try to place the white vertical line inside an affected audio clip, it takes a very long time to move there.
Could this be related to working on the project with QuickTime Alternative 1.81 installed and now trying to continue with QuickTime 7 installed?