I update this post to say that some days ago there was an update of AMD drivers and FXAA works for me now, just in case someone had the same problem

Last edited by painkiller; 08/22/11 18:06.
3D Gamestudio A8 Pro
AMD FX 8350 4.00 Ghz
16GB RAM
Gigabyte GeForce GTX 960 4GB