So I have looked around and I have seen a lot of people talking about having extremely poor performance in multiplayer but usually are fine for single player. I'm having extremely big problems with single player however. Regardless of what settings I use, ultra or low I get around 10fps. I had modded arma before playing so I uninstalled the mods and reinstalled arma but even with vanilla arma I still get sub 20 frames at best. In the configure options the arma fps counter tells me I should be getting 100+ frames on low and around 30+ on ultra. I have an i5 4670k and an r9 270x toxic and 8GB DDR3 RAM so I should be able to run it decently regardless of the poor optimisation of the game. I even tried using the launch parameters that people have said worked but to no avail. Any help would be greatly appreciated.