I have two 7600 GT OC on a p4 ht 3.4 oc and 2gb of hyperX memory and 500gb hd cooling system is thermalake atrix 500T extream power supply....but still i am exp. hangs and lags on varios places spcily when night and inside the caves....please help!

make sure you've got the latest video drivers, if you are experiencing this only in one game it could be a bug or something.

how can i remove the bug?

lol, wait for new drivers and install them 8)

TQ is a real draw on systems and pretty buggy on top of it. I play it with a pretty powerful system, e6600 @2.925, 2gb ram, 8800gts 320, raptor, and still have occasional slowdowns and rubberbanding effect. All the reviews I have seen (especially with IT) complain about problems. I would say it is probably just the game. Sorry.

yup, the game is awfully unoptimized... My system (E6600, x1900xt, 2gb) also experiences slight slowdowns.