After capture and editing using Ulead Video Studio 7 SE, previewing the movie shows many stops and starts in the movie (stutter). Burning the move to DVD disk reproduces these stutters. What could be the cause? I have a Pentium IV with 1 Gb RAM, LG Super Multi Burner and separate Hard Disk of 80 Gb. I have no other programs open, only Windows XP and Video Studio.