Yesterday I started experiencing an issue with VR Sports Challenge, I'm not sure about other apps yet but the game lags big time until I hit alt+enter to change the window on the monitor. Full screen or a windowed mode will work fine but the game starts out lagging or starts our minimized and lags if made full screen one way or another. This is a new issue for me and an annoyance. I have not yet been able to figure out how to fix this permanently.