Sonic Racing Crossworld slow

Hello !

I'm new on linux and have a problem. When I try to play at Sonic Racing Crossworld, game run slow. Between 30-50fps. Sometimes steam show that it runs at 60fps, but game feels slow. Like a slow motion. I tried different Proton and change TSR to TAA, that make me gain a few fps.

Does anyone had the same problem ? I don't understand why it does work since ProtonDB show it platine and that I was able to run it like a charm on Windows.

Thanks for you help !

Config:

i5 8600k

Rx6800XT

16gb ram

Fedora 43 Workstation