You know what's annoying?
Knights spamming "."
Do you know why they spam "."?
Because they want to check their lag.
Do you know what would be a simple brainless to code method to fix this?
/ping.
Player sends /ping. Game responds "Pong."
Easy lag check without disturbing your party :)
and then everyone spams ping and lags the whole server and everyone disconnects. The end.