Troubleshooting - Automobilista 2

Anybody knows if there's a way to let the game use more power of the system? I have a Ryzen 9 5900X 12-Core and GeForce RTX 4090 (24GB) and while the game runs good in high details on my triples, the gpu load is at like 40% and cpu at 15-20%. Is there any way to use that headroom? Changing ingame details doesn't influence the load, only the fps
(Other modern games easily take full advantage of the gpu)