Graphics Glitch

I have an odd issue. When my card enters the third power state (or if set to max performance so it stays in that state) then I am get some odd graphics glitching. They “look” like a problem with dithering…but the dithering settings dont do anything.

You can see the grainy textures in the portal there for the zone line. It should be smooth, but its not.

These were taken with 346.35, but I also tried going back to 331.89 and noticed it still showed up there.

Ubuntu 14.10
Driver 346.35