95% cpu on main menu for no reason

[Tredecillion]

I have been playing civ 6 for a long while, on both my current and past hardware.

With no dlc (and even on the epic games launcher cuz the game was free there at one point), the game is now stupidly slow and maxes out my cpu for no reason (the game played very well, even on the biggest map, just a week ago, with no system updates in between)

I also have that problem with factorio, but idk if that is relevent.

Specs:

OS: Debian 12
CPU: Ryzen 5 5500
GPU: RTX 2080 super (Yes I know I am cpu bound, I got the card used and I don't have 500$ for a new cpu rn)
RAM: 32gb ddr4 @ 3600
STORAGE: 1tb nvme ssd (pcie 4 I think)

System monitor shows 95% usage on all threads and only 9gb of ram used. This is not in game, it is just sitting idle on the main menu.

As previously mentioned, the game played perfectly fine last week. I didn't play these past few days. Last time I had that problem (on factorio), I happened to reinstall debian and that fixed it, at least until now. I would really apreciate a solution that doesn't involve reinstalling and reconfiguring all my apps