Sudden FPS drop after exiting the menu (Borderlands 3)

About 3 days ago there was a problem: if you spend more than a couple of seconds in the inventory / skill tree / menu - the game will sharply lose fps (from 50-70 to 10-20), friezes will appear, regardless of the character. It becomes impossible to shoot or even drive vehicles.
The problem does not disappear even after restarting the game, but for some reason it rarely gets fixed when quickly moving to another location
All graphics settings have been tried, the entire Internet has been combed
Steam version