Witcher 2 glitch

Not sure about this, but speaking in general: Go to gog and re-redeem your key for a DRM free version. It runs better than the Steam version for me, don't ask me why.

Lol with this glitch the game looks far more beautiful.

I had similar problem with COD MW1 ,it was my friends Graphics card problem

if this happens in all your 3D games, your GPU will die within a few months, at least that's what happened to me.

if you are using steam version, try patching it or use gog version. its a patch for different issue but it just might help
link

Witcher + Matrix :D

Don't wanna scare you man, but maybe you videocard is about to close its little eyes forever

mmm, i think the ram of ur video card is going bad XD, if u can set the ram clock the same of 260x and not the OC edition or lower it a bit, this should help , in order to let it live longer :) anyway it will die , if it's not an hardware problem try as the other people said for the gog version or similar things :)

looks like your gpu will say "goodbye" soon.

perhaps try not to oc it ;)

Cya videocard.

Replace the GPU ASAP. If it's still under warranty you shouldn't have any problems.
I've been on that situation with a GeForce 256 if i'm not mistaken, but i wasn't able to replace it directly through the retailer because they didn't find any flaw (nor did they try to run that same game, Call of Duty 2).