With a Samsung LU28E590DS monitor and an ASRock Radeon RX560 4GB graphics card and when opening, moving, closing windows in Windows 7 64-bit, there is often screen corruption (for example windows don't disappear completely when closing, but desktop needs to be refreshed etc). The latest drivers from AMD are installed. The monitor's response time was changed to fastest with no difference and graphics drivers are using default values. Any ideas what might be causing this?