I recently got an iMac with an radeon 4670 but on stalker call of pripayat although I cAn maximize settings and aa af on static lightning I can't use other lightning methods without taking a huge leap downward with my fps in game. Like full dynamic light kills it for me where I have to make the game look ugly for 30 fps while otherwise I get 80 to 130. Is this normal? Btw I'm playing on dual boot bootcamp window 7 64 bit.
But how come stalker a tame not brand new has lightning that can't even perform on it? I mean I haveto essentially use the same engine and lightning from the first game although with more bells and whistles like resolutions and anti aliasing. Would the first stalker on the other lightning options also struggle?