I have two Windows 7 gadgets, which display CPU and GPU usages. I've been having stuttering problem when I ran on the full screen with high settings. I was curious about why it did that, so I ran the game on windowed mode. Here is what I found. For some reason my GPU only up to around 25%-30% while the CPU seems to use the first core extensively. When it stutters, it only maxed out the first core while the other three are around 30% maximum.
Has anyone notice that Fallout New Vegas only max out on one core only? I think this is reason why I have all these stuttering/lag problem.
I'm using AMD Phenom II X4 940
8 Gb of RAM
Win 7 64-bit
Geforce GTX 460