I have a 28" 4k Samsung monitor and a RTX 2080 super. Every so often when I am gaming, the monitor will flicker off for a split second. It seems to happen when there is a flash on the screen in the game I am playing. Obviously if you are a gamer you understand that a split second is still way too long to not be able to see what is going on. This mainly happens on Overwatch, but I think I have seen it in other games as well.