Problem with Meta Link (Meta Quest 2)

As the title states, I have weird issues with my Link connection.

First of all, it worked for several years, no problem and my drivers are up to date. All software is up to date. My ardware is easily running VR games.

Now, I connect the cable, my headset is connected and shown is connected in the application Meta Link. Then I start the game (for example, Hard Bullet VR), the link works. When the game is running for about 3 minutes, it suddenly crashes. But now the weird part: Only inside my VR Headset, the game crashes. When i look at my PC Screen, the game runs fine and detects all movements i make with my VR Headset. Just the projection onto my Headset doesnt seem to work. Yesterday, everything was fine... What yould have gone wrong?