During the beta I took some data about how well PS2 was using my CPU and compared it to battlefield. I've taken another set today and I'll keep updating this thread after each optimisation so we can see if it's improved or not. Here is what I got during the beta: And here's what I got today: If you want to post up your own data all you need to do is run PS2, then press alt-f and turn the graphics down (probably wont need to), until it says [CPU]. Then you just need some logging software to get the data. I used AIDA64 extreme because it had a free trial.