So recently when my friends and I joined the server, I would have extreme lag a few seconds before the game would kick me out of the server with the message "Timed Out" on the screen. One of them experiences no lag, while the other has a bit. I would try to rejoin, but every time I do I'm only able to play with no lag for a few seconds and the problem would occur again. Eventually, the server itself would stop and turn offline. I'm the one that starts the server.
Here's the log: https://mclo.gs/rvDkk5d
We're playing with Technic Tekxit 2.21