Guys i have a Dual core 6600, 4Gb, and 8800GTS OC not the worst PC and after playing some minutes the fps go down from 60fps to 30/40fps (in the same area!) and i'm still i don't understand why! i play at 1680x1050 quality 9... (if i go down it's the same...). I also don't understand why when i change a scene sometime the game start to save the game... and then my fps go very very low!
I tried all change resolution, change quality but it's always the same... any helps?