It seems like when I zoom in or out on a section the A/V timing changes. Also sometimes the transitions don't show properly on the preview. I'm making a slideshow using .6 to 2MB JPG's. It doesn’t seem to be a correlation between picture size and when it does this. When I run the video my cpu usage only maxs out at 60%, there is also available memory as well. I'm running a AMD 2700+/333, 512MB PC3200 RAM, GeForce ti4200. I only have a 40gig hard drive but it's half full and I've been defragging nightly. Are there any setting I might be able to change to help this?