The title says it all.
I've installed, reinstalled, uninstalled, played with the lowest and highest settings, DX11 off, DX11 on, without DX11 and the 1.9 update alltogether and nothing has worked.
Here is a video of what's going on...

http://www.youtube.com/watch?v=43QrxXwmf44&list

Specs:
AMD Phenom II x4 955
8Gb RAM
ATi Radeon HD 6870
Latest Vid Drivers - CCC 12.2