So I'm trying to make a slideshow/movie in iMovie. I've got about 2000 pictures that I'm dealing with. Everything runs well. I'm able to exit the application and restart with nearly no wait to "load the project". I'm also able to adjust the Pan/Zoom (Ken Burns?) effects with no problem. THEN if I add a theme/transitions between every picture (via preferences) it messes everything up. Now I've got to wait 20 min to wait for "loading project" to be done and the pan/zoom adjustment is painfully slow to use. Is anyone having this problem?? One of the reasons I left my old Black Macbook was that I thought this was a computer speed issue. Now I'm on a MacBook Pro, so I doubt computer speed is the issue. Any thoughts?