so recently ive noticed that my GPU is sitting at 1000 MHz constantly when i am playing a game even though its supposed to go to 1120, i have the Asus R9 270x. I have installed the latest drivers and restarted my computer more than 30 times and it still wont fix it.
Possibly a combination of the powertune tech. of your card/new driver.
Is windows power plan set to performance, and power limit (in wattman) to max (or experiment with lower %'s) ?
AMD graphics performance may help ?