Started after the latest update, anyone who loads the nether crashes the whole game for all connected players. We have a few add-ons, not sure how I'm supposed to include that so I'll just list them under this. The game is currently unplayable, anyone who actually manages to load into the nether gets stuck there, when they load back in the game crashes before the portal loads back to the overworld.
List of active Add-Ons: Furniture, Naturalist 26.1, Tinkers' Construct, Structure Generation, Farming, Essentials, Gravestone
Exactly also my issue.