You need to do some tweaking to make it run better. since this game isn't optimized well for PC yet. to give you the perspective, i have a single evga7800GTX512 w/ x2 4800+ at 2.8Ghz and 2x1G RAM, my max resolution it can go is 1024x768 shadow setting at low (this is important. since shadow makes lots of lag in this game) everything else at high. and i get average of 40-60FPS (which is a must for FPS..preferably above 80FPS but...I'm also the lucky one who can PLAY this game since lots of ppl even has better system than mine has problem running it.) thats how demanding this game is...or say how poorly optimized game this is...
and also if you are old school R6 player, this game might not satisfy you...this is more like R6-Lite. consoly arcadish action shooter than pure R6 tactical shooter. it's still fun though...just not pure R6.