I tried for the first time after this tutorial although I don't have a 5090 FE, but a 5090 Gigabyte GAMING OC : https://youtu.be/OYbgMEGK3d0?si=xtcTAqdxqzzME3x7
If anybody has any suggestions, please feel free. I did 20 loops of Speedway with 99.7% frame stability, played more than an hour Indiana Jones Full PT and Cyberpunk PT with no crashes or artefacts.