I'm using AMD Radeon HD 7950 GPU and ASRock Z77 Pro 4 motherboard. All my games automatically put the settings to mainstream or lower (for example Crysis 1), which doesn't seem right at all. It seems like my system is using the CPU's graphics unit instead of the AMD. Fast paced shooters lag, along with games with a slightly large environment. It looks like a fast slide show. What can I do to fix this?