Ok thanks. Do you think I should adjust anything in the catalyst control center? I have heard of people adjusting these settings for better game play.
That I would not know; I have an Nvidia card ATM and have not used CCC in a while. In my experience, try to select a single monitor profile, toggle the vSync until you're happy with the results and if you run a high resolution you don't need AA (BTW, make sure AA is not enabled in CCC and is not forced, otherwise it will take precedence over the game setting and still be enabled).