Graphic cards: AMD Radeon HD 4800 (twice), linked via Crossfire-X cable Mainboard: https://www.gigabyte.com/de/Motherboard/GA-EP45-DS3R-rev-10#ov Some weeks ago i tried to upgrade my graphic card drivers, to get the crossfire option in amd catalyst to work.. now i have a 1024*something resolution, in average 10 fps whilest gaming and lags everywhere.. I tried to install the old driver, but for some reason windows always kicks it out, and i have almost no options for the resolution.. Though i am an IT specialist, i am stuck here.. The latest driver i found was released in August, which gave me a ton of resolutions to choose from, even some that are higher than my screen resolution.. but not the exact one i need Also, i can not install AMD Catalyst (ReLive) nor Adrenaline. It errors saying "Hardware not identified" I am helpless.. do you know a fix that might patch it? PS: also thought about getting another graphics card that fits my mainboard, but i can not find any card that is compatible with the mainboard and has enough performance improvement over the 4800 except a Nvidia Quadro K2200, which sadly does not have VGA as i saw (card: https://www.videocardbenchmark.net/gpu.php?gpu=Quadro+K2200&id=2947 comparison: https://www.videocardbenchmark.net/compare/Quadro-K2200-vs-Radeon-HD-4810/2947vs2829) What should i do?