Imposible play

[-Kodi-]

Which driver are you using? Not to recent? Try a newer one, maybe that will fix the problem.
And what is the problem with the temperatures? It's still deep in the green range.

I kind of wonder what the rest of the system looks like, CPU, RAM and storage.
Maybe the rest of your rig doesn't have enough steam to pump more FPS with the RTX 2080.

But also the game got far more taxing, but not as much as you make it seem.