Original report: EnigmaticaModpacks/Enigmatica6#1185

Modpack version
0.3.13
Describe the bug
On an inconsitant basis I find that my game freezes, for variable amounts of time, or completely crashes when I leave a server.
Logs
Do not have logs as I have to forcibly close my client when it "crashes"

Crash-report: https://pastebin.com/yMXjqLBa

emojiful-1.16.4-2.1.4