Same. I was in a group in the Hole for hours, with no issue. Then I sat down, and suddenly I couldn't type (but the game kept going). Then, a few seconds later, the whole game crashed.
I then re-logged in and crashed two more times literally seconds after getting back in! I was about to restart my computer, but then on my third time I finally made it in without crashing ... and of course at that point my group had broken up, and I had to gate out
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I did get the optional patch, so I assume it's responsible.