While playing, the server suddenly lagged very much. After rejoining, we would then keep falling out of the world, lose our skins, "lose" our items, and then, disconnect to the error of "Internal Exception: java.net.SocketException: Connection Reset." On the logs, it would say we were kicked due to keepalive timeout. Some of us can join properly but most cannot. What could be the cause of the problem and how can we fix it?
Here is the log: https://mclo.gs/H9gDvXQ