FPS performance - VRAM bug?

I think I know where the problem comes from, at least for me it worked. game without mod, no dlls 3.8.10 integrity check game file on steam, I’m on ryzen7800X3D RTX 4080S 64 Ram the image comes from Paris last night all in ultra but really all.
the bug comes from the chosen server, you must not leave it in automatic, you must define the best server for you depending on the region you are in and if you deactivate multiplayer it is even better, image before and after changing server, the fps remains stable even if vram and almost saturated.