I have Vegas Pro 16 installed on 3 computers, 2 are used for DV capture. 1 of them has no problem, the other when I capture footage has dropouts/pixelated footage, plays smoothly though. What is wrong with the footage I capture, and how can I resolve the problem?
You'll find some good troubleshooting tips for your firewire capture here. Maybe you'll just want to turn off the preview if the captured video is fine.