Crash, generally but not always, when changing locations

Sometimes it's on login, sometimes after selecting my character, but very frequently it's when I go to a new location (Hideout, Kingsmarch, etc.) It doesn't happen as often when entering a map, but it does happen sometimes, and it does happen sometimes in the middle of a map.

I have a Dell G7 7700 and 16gb of memory, and I recently upgraded it to Windows 11, hoping it could stop the problem. It didn't. I have a geForce RTX 2070.

Here is my system info:
https://imgur.com/a/9MihdKn

A previous poster (I can no longer find the post) has listed a "possible" fix that involved going into the game options and shutting off multithread (listed by the game interface as an inadvisable option).
That has worked for me for about two hours now, and may be the answer to this problem. I have been playing PoE on this rig for over a year, so something that was updated around September appears to be what broke this.

The game has frozen again on login, but I have not has a mid-game disconnection since undoing the multithreading.
I should note that the crash is more of a freeze- the gears stop turning, then the screen greys out and i am informed that the program is not responding, and I am asked if I want to wait or exit the program. Waiting does not work.