ATI Full Screen vs Pseudo

[Buchon]

* Added True full-screen mode. The game was previously playing in a stretched
window; that mode is also still available. Switch between windowed, pseudo
(stretched window) and true full screen modes in the Video Options.
NOTE: If you are running an ATI video card and you notice reduced performance in
True full-screen mode, please switch back to Pseudo to improve framerate;

As you can read in patch notes of BETA patch 14413 some ATI video cards can experience better performance in Pseudo mode than in full screen.

I guess is use full report them.

I think that my card is one of them, there is not a big difference, it is barely noticeable but the game runs more smooth in Pseudo mode.

Card :

ATI 5870

Driver:

11.4 whql

Os :

win7 64