DWM (Desktop Window Manager) crashes while gaming

[bigfootSE]

Since about two weeks back, I have frequent crashes playing various games, e.g. Fortnite. Suddenly during the game (can be after 1 minute or 30 minutes, but usually not longer than that) the screen goes black ("monitor cannot find any input") and the audio disappears. The graphic card is still running, the lights on it are turned on.The only consistent event in the event log when this happens is this: "The Desktop Window Manager process has exited. (Process exit code: 0x0000042b, Restart count: 1, Primary display d

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