Thanks for the reply Michael, hopefully the update is the fix. It is more than a cosmetic issue though. Currently I have a 5 minute, very heavy comp and I want to be selective about what sections I am waiting on to be previewed. If playback is slow while a preview is being created, I can’t tell if the next 4 minutes need to be previewed (not going to wait for that) or if there are 15 more frames until I can play the whole comp in real-time (I would gladly wait for that). So, it’s not the worst thing in the world, but it does have an impact on efficiency.