RX480 screen tearing outside of games

Since i upgraded my old GPU (GTX 660) to a RX480 i have screen tearing while i scroll webpages or watch videos on youtube or with any videoplayers. In games i always activate vsync but on desktop it seems it don't work. I have the newest drivers installed and everything else works perfectly. But the screen tearing is kind of annoying so maybe someone can help me to get rid of it. Thanks.