i have 64 bit vista, got the demo off steam, and run it maxed at 1920x1080

it runs butter smooth, only hiccups occur when i look at certain objects.....which is really weird, cause heavy combat and explosions don't even touch the fps, but sometimes as soon as i look at one random object or section of a room, the framerate dips

i have no idea why, probably optimization issues

REforever101

My exact problem, except im running at 1680x1050.