I have V8 installed on Vista 64bit, untimate operating system. When I play back a project it slows down for a few seconds then catches up to its original speed for a while then slows down, etc. I have quad core Q6600 (2.4g) cpu 2 gig ram on this computer. I don't have the same problem on my Duel core, with 4gig ram. Has anyone experienced this? I don't know if it is the operating system or the fact that I have only 2g ram. Any help appreciated