When i play any games and alt-tab a lot my game has a chance to freeze. How do i fix it?

[Microsoft Windows]

So basically, if I am just playing normally, everything seems fine, but when I alt-tab, sometimes my game just freezes, but it is registering all my clicks. To unfreeze it, I need to switch to another desktop, and it unfreezes. This is happening only with games, not with any other apps on my PC. And this started randomly happening like half a year ago. I am just tired of this stuff, and I don't know how to fix it. Any ideas? By the way, I can give any additional info, like PC specs, etc., if you need that.

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