Well my computer just isn't performing like it used to. Whenever i'm playing games it seems to always be freezing up for a second then will go on, it will continue to do this all the time, i used to be able to play Need For Speed Underground flawlessly with everything turned up, not with stuff even turned down it still freezes for a couple of seconds. My specs of my computer are below. I update the drivers to the 91.31, i'm running the BFG Tech 6800Gt, i never uninstall my old drivers after i update, should i do that or should i just go back to older drivers? If i need to uninstall the old drivers how do i go about doin that.