The game has been optimized a lot by the recent patches, almost to the point that my PC can handle it! The voices have had some improvements but it's still bad... The interface can be removed in the game difficulty options Actually this is not true, the "environmental engine" does support the huge landscapes. It is your PC that can't handle it properly. I call Arma 2 the best game of 2009! It has a nice editor, lots of mods and the developer are doing the best they can to improve the game. Too bad that they never update their demo. But there is a new demo coming out soon for Arma 2 Operation Arrowhead, hopefully it will be better than the old one.