WIN11 BSOD booting up a Game, Randomly on Desktop

Hello everybody,

I´m getting for some time now randomly BSOD´s when starting up a Game. This doesn´t happen all the time but when it happens, I do have to try starting the Game for 3 to 6 Time till it starts up without getting a BSOD. Sometimes (very rare) I do get a BSOD randomly while surfing in the Web.
I just setup my system with a clean install today, in the hope this would fix it. After installing just the most crusial things + installing all drivers + updates, I do still get BSOD´s while starting the game.
So since I could exclude a software/driver issue, there are only two options left in my mind: OC that is instable or the RAM is faulty, since it has the issue that I can´t run XMP on it, eventhough it is XMP 2.0 compatible.
I hope you can help me clear things up more.

Thank you in advance!

[EDIT] Sorry I just saw that there is a Win11 related forum. Sorry for that.

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