I had been playing Witcher 3 at 1440p with 4K DSR enabled. I purchased a 4K monitor, and I assumed the FPS hit would be similar between the two. With 4K DSR I had around 98% GPU utlilization and about 55 to 60 fps. Just having an actual 4K monitor with No DSR, same graphics settings my GPU utlization is 70%-80% and my framerate is is 10 to 20 fps lower. Why would my GPU usage be so much lower, i'm assuming that is what is causing the fps hit.