A 4K monitor would be sweet for gaming. Low input lag, accurate colours, sharper image.
My dream is a 55” monitor for the living room, not a TV: HDMI 2.1, display port, 120Hz with frame sync, HDR, etc, but with NO image processing.
LG almost did it; a 43” in 4K but no HDR, for the price of a 55” TV.
https://youtu.be/2kYrQ-LOiXE