i have a prophet 4500 and no matter if i install the powervr ref drivers or the hercules drivers, i can't seem to disable vsync in opengl. i've tried win2k and xp to no avail. i tried using pstrip...that didn't do anything either. the reason i think vsync in still enabled is because q3 timedemo scores are almost exactly the same for 640, 800, and 1024 in 32bit. I have a tbird at 1540...so no cpu limitations. help me out if you can...maybe a registry key?