I just found that very interesting. I am using reverb g2 on 9900k and 3080 32GB ram. Normaly I can get very smooth vr experience. However I used to play 30 more mins then I will feel fps drop. The interesting thing happen today is that I realize no matter how long a play the game, as soon as a look to left (chat bar) I will get FPS drop immediately. And if I look back to other way, FPS come back.