Hey , i gqve my old syste to my bro, (8600GT 4500+x2, 3gig raam) installed gears of war, then was only getting about 5-10fps jolty gameplay, with 400x300 res, ALL ON LOW, fresh install, latest drivers, ARGHH!!! PLS HELP!!!!
something is wrong (well obviously, i mean in the code). i would try to reinstall. but you shouldn't expect amazing graphics from a 8600gt. i have 8600m gt in my macbook pro (im guessing its similar), and in cod 5 at 1440x900 on low settings i get like 40fps, sometimes 50, but when intense 30. so gow shouln't be like that, especially on those settings..
cheak on google on how to copy your multi-sigle player progress (if there is any considering ur gaming dilemma) then save it to desktop and reinstall then move it back when reinstalled.
Hope it works soon.
the game looks awesome.