This is a Fabric 1.18.2 server. The console repeatedly says;
[18:47:10] [Server thread/ERROR]: java.lang.Exception: Collision box is too big! AABB[-2.8641268650000006E7, 65.37959519348651, -2095.2104588858783] -> [-1566.3190256208181, 67.1795951458028, 1.2290062650000006E7] returning empty list! this might break things
[18:47:10] [Server thread/WARN]: Too many game frames in the game frame queue. Is the physics stage broken?
[18:47:11] [Server thread/WARN]: Too many game frames in the game frame queue. Is the physics stage broken?
[18:47:12] [Server thread/WARN]: Too many game frames in the game frame queue. Is the physics stage broken?
Then eventually it will crash and say;
[18:47:12] [Server Watchdog/ERROR]: A single server tick took 60.00 seconds (should be max 0.05)
[18:47:12] [Server Watchdog/ERROR]: Considering it to be crashed, server will forcibly shutdown.
I upped the amount of RAM the server can use to 8GB. Server does not seem to crash if we do not move the ship. Would love to fix this as my son and I absolutely love playing Eureka together.