Exact video card model would be nice... It could be R7 240, 250, 250X, 260X or 265.
Do you have latest GPU drivers?
Streaming some glorious 21:9 gameplay (including NBA) on twitch.tv/dommy73
i7-6700K, VIII Hero, 16GB @ 2400MHz CL14, 980 Ti Classy
Fedora 23 for everything meaningful, Windows 10 for games and video entertainment