I got my first gaming PC in 5 years ago on Oct 11, I ordered Arma 2, ArmaOA, and Arma 3 and my framerates were like 20 or less, I was really unhappy, My new PC is a mid range gaming PC, I have a haswell intel 4770 processer 3.4, a Z87 Gigabyte board, A EVGA Superclocked Nvida 760, 8 gig of ram, supercooled, 700 watts of power and so on, I could not get it to run until I found from google where others had gone into the CFG file and made changes, changed their NVIDIA profile and applied it to the games, and disabled a few features in the games and made framerates on all the game are between 45 and 60 and I have the setting on high and very high. Anyway I am new here so I do not know if I can post the links to the sites where I found this info, If I can I will.