Significantly worse performance after update 1.3.1.0

The season 3 update made the game near unplayable for me. I was running it so far locked to 120fps, with custom (mostly high) graphics settings, on my system with a 5700X and a 9070XT at 1440p native. Minor frame drops only occurred on Empire State, but they weren't really noticeable. After the most recent update and Railway to Golmud's own horrible performance issues aside, it seems like there are more frequent dips in performance on other maps as well, but additionally, the game started feeling very unresponsive, with even the menus being very delayed at times (most notably the spawn screen freezing every time it appears, but the other menus can feel very spongy as well), and the unresponsiveness seemingly getting worse over the course of the round. This does not seem to be related to my graphics settings, as turning them all to minimum (including turning FSR native AA off) did not result in a better experience.

Any ideas on how to remedy this? Is it maybe networking or server related? It honestly reminds me of how BF4 felt to play in its first year or two after launch.