Low FPS when racing offline

Did everything that I could (reinstalled everything manually) but when I do a race offline with 21 other cars (SDD Grand Prix 2026), I get max 95 fps while offline I get 190-210, is there anything I can do ?

Specs :
R7 7800x3d
4070 Super
32GB DDR5 6000Mhz
Game installed on 990 Evo plus 2TB
CSP 0.3 Preview 445
Pure 3.21 Hotfix 6
Running QHD 144hz

https://preview.redd.it/mbvn0pwtyfch1.png?width=1728&format=png&auto=webp&s=ce31b9d5f18c7d26728c23c3ddaff1187a0f7e0d