This is issue is really annoying. When I log in to game and if I alt+tab for the first time, everything is fine. When I get back to game and try to alt+tab again, then my screen becomes very bright (I've set brightness to average). And when I get back to game, I can see in screen that something is wrong with refresh rate. If I would play like this, my eyes tire very fast. To fix this I can change refresh rate to something other than my monitor native refresh rate and then back to native refresh rate (it is 60). Then everything is fine until I alt+tab twice. This thing actually was happening from like c3 or c4 and was never fixed. So maybe someone know a better workaround than this? P.S. If this happens on my laptop, which has only one refresh rate option, then there is no way to fix it like I can on my desktop PC.