Yeah it's right, the alpha was very good, it's a very nice work for a alpha, but with my new graphic card, a Sapphire HD 7850 2GB, it's very hard to play without lag. In Arma 2 i can play with very hight settings, in 1920x1080 with 3d resolution at 100%, but in Arma 3 i can play in Standard for do not lag
I think the players who have AMD Hardware, need and want a better optimisation because at this moment it's hard to play

Good luck Bohemia and thanks