yea, it wont exceed FPS until you have over 50, basically i havent played a FPS that allowed more then 50 to a game, i think i heard SOF2 allows you to have up to 40, i may be wrong... Once you have like 75 though, and they are all in different zones, and they are all either killing something, or combining something, or running around in circles... i would imagine the CPU usage would be a bit higher
~Dan