Graphical Issue

Got a very anoying graphical bug that only occurs in dungeons. I've updated my GTX 680 to the latest driver and also tried the beta driver, unfortunately both dont help.
These lines came from another player
http://i44.tinypic.com/wji6xf.jpg

Here the water was actually above me...
http://i44.tinypic.com/2rw6a6r.jpg

Thanks!

Are you using a 3rd party app or the drivers to force graphic settings?

I don't use any app or software. All is standard.
It happens less if I turn all the graphics to the lowest.

Thx

Did you check the card temperature? It could be overheating.