I've had this monitor, an AOC Q27G2U, for about a year and it sometimes does this(pic related) when I alt tab out of a game or change refresh rate. Speaking of refresh rate it does this(gif related) at 144mhz and i switched to 120 and it was fine for awhile but now it is doing it on 120 too. I have a dual display setup, the second one had no issue and if i change from DP to HDMI nothing changes, my GPU is a GTX 1660. I also bought a new mouse, a Steelseries rival 3, and for some reason it slows down randomly for a splitsecond and i've done all that google suggested to it but nothing worked. Is it tied to the monitor issue or i just have the worst luck when it comes to electronics?