I have a suggestion but it might be not to greaty for you. Check how the game is going on 1080p. Check if you got the newewst nvidia drivers.
I`m having 55-65 FPS with RTX3070, 3600, 32 3,2k GB RAM, SSD NVMe
settings ultra, RT ultra, DLSS quality on 1080p
when driving a car I get 45-50FPS...