Summary
Clean install graphics driver with Display Driver Uninstaller (DDU)
Description
The screen flashes when using XeSS at 2560x1440p. The quality preset is not too bad, but balance and performance are unplayable due to the constant rapid rainbow flashes.
Resolution
Clean install graphics driver to version 31.0.101.4885 or newer with Display Driver Uninstaller (DDU). For guidance, How to Use the Display Driver Uninstaller (DDU) to Uninstall an Intel® Graphics Driver.