[Todd Brisson]

I’m having the same issue with my GTX460, I see no appreciable gain in speed with CUDA enabled and I see no % increase in my GPU monitor’s reading. However, I did notice that AVC rendering will crash after around 10 minutes of footage is encoded if I do not check “cpu only” in the AVC custom settings. There is definitely some sort of bug associated with this card.

I previously had an ATI card installed, but I did a complete uninstall and even purged registry settings and reinstalled Vegas to rule out any driver related issues.