Try the "profiling" build of of Arma 3, it makes mine go from running at 22 fps to 55fps average.

That said, there will be some optimization done as the months go on, still have some growing pains from this patch that was being worked on for 6+ months coming out in January.

I can't even run the game. Maybe some day when it's optimized

Slay here, the server is having issues on the host side. They're having issues in NYC with it. Feel free to send me a friend request on here to get updated if you want, feel free to delete this profile message too, cheers.