I'm getting an occasional jittering on my monitor screen when I play quake. It appears every 2 or 3 seconds for about a second. Its annoying as hell, it goes from solid smooth to laggy jittery for every few seconds. Anyone have any ideas? I'm running samsung 2233rz at 120hz res 800X600 4:3 ratio (black lines down the sides). Graphics cards an ATI 4600.
I've recently added an external usb sound card, could this have something to do with the problem? Also, I noticed when i play high quality youtube vids (HD) they run at a terribley low frame rate as well despite my internet connection being well over capable of streaming the clips. Any help much appreciated.
Thanks