I am seeing choppy play back when playing scenes via nested veg. When I watch the source project I don't have the problem. Both projects are on the same WD 250gig internal drive. (All media is on the same drive). I have the same issue regardless of using external monitor or not. There are 8 tracks to the orginal project. Moving letters in the title are jumping rather than flowing smoothly. Some scene trnsitions jump instead of flow.