Windies, I hope you are talking about multiplayer 10vs10, 20vs20 games?!? From your writing I don't think we play the same game. If you are talking about singleplayer scenarios, missions and campaigns (which are not out yet) - game works ok. But if you are talking about main aspect of Arma - Multiplayer, then obviously either I am wrong or you. So please explain on what version of the playing you meant: single or multiplayer?
And totally agree with both Blaa and mama: "Upgrading is not going to be a miracle solution" and "Graphics settings from Low to Ultra mean nothing in terms of FPS". Like I said before: I am a veteran, I have bought all Arma games, I have supported dev team from the start, but they keep disappoint me with online optimizations :(