this is very weird, i usually have my gpu set to 1000 target speed (using AMD overdrive) and my games used to get 18fps....one day i was experimenting with GPU-z and my GPU clocks and i found, that i got 27fps when my GPU clock was set to 300!!! something else weird, was that when my laptop was plugged in to power the clock would jump from 420 to 720 constantly (found this on GPU-z) Should i Uninstall AMD overdrive? or do i need to do something to actually make a higher clock increase my performance?