freeze when exiting games

My specs: i5 9400f RX 580, 4gb 12 GB RAM, both kingston, both clocked at 2400, one 8 gb, one 4gb. HDD toshiba 1000 gb PSU: something with 500 watts Motherboard: gigabyte H310M So, I can play for hours and hours, 4-5 hours straight. everything is fine. no fps drops, no sound scatters, no...