[2021] FPS is low on high-end PC

So, just got back into Odyssey after a long time. But a problem has occurred that I really can't figure out. It did run smoothly before, even on very high settings I was getting 80+ FPS, but now on the lowest possible settings, I'm lucky to get 30+ FPS.

I've already tried uninstalling and reinstalling, but that didn't work. Believe me, I tried looking everywhere, I read it could be the game not using the graphics card, and perhaps, use the integrated graphics card in the CPU. All of my drivers are up to date, and I've updated everything.

I get the same FPS, no matter if I run the game on the lowest settings, or "very high". I tried to benchmark it, and the GPU usage is only 37%, and the CPU usage is at 78%.

PS. Every other game runs smoothly, only Odyssey runs like badly.

My specs:
I7-9700KF
RTX 2070S 8 gb
16 DDR4 3200Mhz
1 TB SSD
Windows 10
Asus 144hz 1080p Monitor