7200MHz RAM crashes game on closing

Hi, 

I have to reduce my RAM to 7000MHz to get a stable game experience for BF 6. 
Memtest86 without issues. 
Prime95 Stresstest including CPU without issues. 

Game crashes randomly midgame (between 1-3h) and almost 100% by closing the game. 
Sometimes, you can see a small hiccup before it happens. 
 
As soon as i reduce my RAM to 7000MHz in UEFI, all is well. 
No other game has this issue. 

Setup is the following: 
Processor:   13th Gen Intel(R) Core(TM) i9-13900K,
Mainboard: Asus Maximus Z790 Hero
Graphics Card: Zotac RTX 4090 AMP Extreme AIRO 24GB
RAM: Corsair Vengeance DDR5 2x16GB 7200MHz CL34 XMP


Best regards,
Zax