The performance issues aren't universal Bob. They may be hardware and/or footage related, so for you it may be that 24.1 is the best option. I've noticed slowdowns, but my issues are more to do with timeline stability, even during short form projects.

Yes, but you've lost all the fixes from the 24.1 patch....

I'm not surprised that ProRes was OK as it's a lightly compressed codec, but amazed that 265 plays back better the 264. Their is either something odd about the conversion or PS24 doesn't like it. Do you have the same issue with h.264 from other sources?

At the 9% threshold, do either of the versions/platforms actually create Playback Optimisation files?

If you try the movieboard drivers, beware of using the 64 bit ones - they crash if you have 2Gb or more of memory - as in virtually useless....

Masks are like any other layer - they have a hierachy based on the track order. So a mask on an upper track will only show what that effect allows from the tracks below. However, you can apply a function as both a Matte and a Mask to any single mask. There are two ways you apply a mask. If you use a track mask it will apply to all the clips below ...

Click on the Dual view icon top right above the preview.

What format is the recording? I'm assuming it is in a video format, so this is down to how you did the screen capture. Can you play it in the source viewer?

The new patch for PS24 includes the new drivers, but there is still an issue with audio DC offset.

ydobemos:Once the project is done, move the original files back, render and done.Let us know how you get on. It should be totally unnessary, as the Playback Optimisation system created mpeg-2 files at half res if you have it set to fastest. A lower bitrate doesn't make files easier to decode. But if that's what you need to do you use Studio, ...