I have been trying to solve this problem for hours.. it s my first time getting into drivers and things like that but i think i have tried everything.I am using ATI 6850 crossfire, 6Gh memory, Intel I7 at 3.8Gh and with an SSD. I bought this machine recently and i put 11.3 drivers with 11.3 cap3 and i was playing Crysis 2 at all Extreme in 1680x1050 resolution with 60fps steady(V-sync on).When patch v1.9 came and also dx11 with ultra and hight resolution textures i downloaded them all 3. I opened dx11 with all Extreme and at 1650x1050 resolution and i had 50fps average (i saw that with hight resolution textures i was losing too mutch fps and because i am most of a multiplayer gamer i didn t care so mutch and i disabled it).After some time i had the idea to put the newest drivers because there was a chance of performance increase.So i did change to 11.6hotfix_july07 through the ati auto detect driver instaler. After that in Crysis 2 i had strange things happening. When i opened the campaign everything was ok and with 10-15fps better than before (i puted V-sync off to see how better the cards performed) so i puted V-sync on again because 60fps is enough and for better gpu temperature.I joined one multiplayer game to see if everything was well in there too and i suddenly saw that i had 30fps(with 30-40% 1st gpu usage and 60-70% 2nd gpu usage) which could get better at fps by just changing and resetting the graphics to what it was but nothing like the fps i had in campaign. I had to change and reset the graphics back to what it was in almost every multiplayer game to just make it playable. After i saw that i put my previus 11.3 drivers by downloading them again from ati website but i had the same problem. Then i tryed every single driver with it s cap from 11.3 to 11.6hotfix_july07 and i still have the problem. By the way i tried with 11.6cap 2 and first time i opened the game the pc froze and i had to close it from the tower button, after that i just uninstaled the cap. What is this? or What am i doing wrong? I want to play the game in the way that my graphics cards are supposed to.I used Driver sweeper and CCleaner for the driver changes.