When selecting a clip in the timeline, there is a slight delay in it being shown as having been selected. Also, when trimming a clip-- I use a ShuttlePRO to perform Alt + [ or Alt ] -- there is also a short delay. It's like the image of the clips in the timeline is being interrupted. When trimming clips in this manner, there is an interruption in the audio.

Never experienced this in any earlier version of the software. I've tried playing with video settings but no change.