I am not sure if this is related to the Nvidia Crash Bug, I do run a RTX 3060, however the game doesn't exactly crash, and there's not crash log message I can copy and paste.
It looks like the lag in-game escalates since the moment I log in, with the first minute almost without any lag at all, to increase exponentially in the next 2-3 minutes until a disconnection. 
I tried a Ender client and the Default client as well. 
Anyone experiencing the same? 
How to fix?