I currently playing it with these settings: 1024x768 without AA&AF and evrything on medium. and the perfomance is good enough! Sometimes there are a few slowdowns but only for a few seconds so the game is playble...
Now if raise the graphics settings a little bit will it playble on a low resolution?? Also i have latest gpu and Physx drivers installed! Will it work faster or look better with another driver or no?