Unexplainable problem

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  • My friends and I played on our Vanilla 1.18.1 server normally for a long time. But recently, every time I join the server with no prior login, everyone would have troubles like low TPS, reduced FPS and sometimes log out. Every attempt to log back in (with me or not) would result in a Connection lost : Timed out or Connection reset. I don't know this is the problem of the server, my friends' clients or internet connection. Please help me.

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