The strange thing is that I've been able to play several times with HDR on in Quake 1, but sometimes it doesn't work and now it suddenly doesn't work at all. I've been able to get the option to activate the filter menu Ctrl F3 on Nvidia and adjust RTX Dynamic Vibrance until contrast and light look absolutely perfect on my ASUS 32 ROG Swift PG32UCDP OLED 4K 240/480 screen, but now it's just gray highlighted and not active.

If I play on another screen like LG 42, 4K Oled in HDR it works. If I play in Frame rate boost mode (480fps+1080p) it works on the Asus 32 Rog Swift, but in 4K 240fps it works sometimes before and now not at all. HDR in Windows is of course enabled. In other newer games, HDR works perfectly.

What could be the fault?