I am running nvidia optimus so my pc plays everything through the integrated gpu except I had when into graphics settings to change the video playback in microsoft edge to the dedicated graphics card. Now when I play a video in microsoft edge it will play but I get screen tearing. Which, is strange. Doesn't happen when I use Dgpu only in nvidia. Only when The desktop OS runs via integrated but the program via dgpu. Any explanation? It makes the pc run better because the dgpu can do the rendering, its better at it and saves the igpu some heat so the cpu stays cooler. Either gpu can play 4k I just like to have it this way, but am trying to figure out how to reduce the tearing. thanks.