After weeks of normal play, application fatally freezes when I join server

[Windershins]

Playing on a small (4 person) modded server updated to v1.19.1: I have had no issues for weeks, but today, upon every login, I'm frozen with various visual glitches. First, I appeared to spawn inside my own head; then, I could only see the night sky. Every time, I'm unable to move or click on anything, and I get the swirling cursor of death until the application goes nonresponsive "(Not Responding)" and I have to kill it with task manager. 

I tried restarting my machine, redownloading VS, and restarting the server. No other players on the server have been having issues. 

I am able to play my solo world normally. 

Does anyone have any insight?

[Windershins]

I've now tried whitelisting it on my firewall: this did not fix the issue but did cause the program to use 30% more memory when running, for some reason. 

[Windershins]

Still experiencing this issue. I tried creating a new world, which seemed to work for a while, but the issue has reoccurred.