Yes this seems to be a power hungry game CPU wise. Much like Neverwinter nights 2 not very optimised, the more characters on the screen the more power it uses (even if they are stationary NPCs). But a good dual core is good enough. If I set my CPU to 1 core the frame rate drops from 60fps (guessing its limited) to about 20-30fps. I do wish developers would spend more time optimising the code, I mean what has changed from NWN1? And they could then use the power to do something better, like AI that dosn't suck.