Anyone else seeing this?
If I double-click a clip in the Project window to open it in the source window, it's fine.
BUT if I double-click a clip that I have placed in the Timeline to open it in the source window, it makes the playback blocky. To fix, I have to right-click on the source window to change the playback resolution to anything other than high, then back to high - then it works fine again.
Using Quadro FX 4800 and latest version CS5 5.02