While this happens to me on occasion, I believe it is something on the server's side that prevents connections from overly laggy sources, bad ping, inconsistent packet connections, etc.
More often than not, a server will lag for all players ever so slightly when new players join/when someone saves ...

Hello, recently I was trying to join an mp server, some servers I can't join, the server saves(sometimes not) the map and it stops responding, others I can join, but if someone else connect, when the server save the map(or the autosave save the map) I just fall the server, I see in the logs a lot of ...