http://www.youtube.com/watch?v=bKD03dh2p-I

I made a very short movie to show the problem.
All the settings are on max, and since I started using the Advanced Graphics 1.7 tool with the Multi-gpu option the flickering is gone, only this wierd thing remains...

Anyone else has this problem?

Specs:

AMD T1100 x6 3.9Ghz (oc)
2x Sapphire HD 6970 2Gb (CrossfireX)
8Gb DDR3 1600Mhz