Turn off Vsync and set the frame rate target to 60.
I have the same issue. This is related to VSync and HDMI Scaling when both are enabled though a TV Screen. I hope AMD can do something about this, since i have to choose between no VSync (Tearing) or a Screen that does not Fit (No HDMI Scaling) and my TV Screen does not have any way to set the scaling.
Radeon Relive 17.1.1
Speler LED FullHD 21"
8GB DDR4 2133
Corsair 800GS 80+ Bronze