Hi I just got a Galaxy Geforce 6800GT (with one of the VGAsilencers stock fitted onto it) and even at stock frequencies I get this lag, like it freezes for a few seconds then goes normall again, then freezes etc. and this is only on dx9 games. It is fine on opengl games, like doom3, but only on dx9 games. What could this be due to? I've got the latest public drivers (61.72)