what i would do is download driver fusion and install it.
download the latest 13.6 beta driver.
download radeonpro (catalyst control centre replacement)
uninstall current driver and do not restart when prompted.
run driver fusion and clean amd drivers then restart when prompted.
install latest driver as custom install and only install display driver and hdmi audio driver, untick everything else unless it is required and restart if needed.
install radeon pro, you can use radeon pro to force vsync etc, i also would no use triple buffering as it adds a lot of input latency.
you can setup individual profiles for each game in radeon pro.
radeon pro has an option called dynamic frame control which can set a max fps, set this to 1 fps bellow your refresh rate so 59fps for 60hz monitor and enable vsync, this gives the benefits of vsync without the input latency.
another thing i do is to change the flip queue to 1 as this can reduce input latency aswell, when i done this for metro 2033 on my 7870 it was like playing a completely different game.