[i64]

I have a problem. My server is lagged. It looks like a big lag (typically lasting 10-15 seconds, 5 second pause and then another), then all players turn coming out of the cause: crash. All logs are clean. This is not the fault host. It certainly is merit someone. What could be the reason? How to stop an attacker.

Server version: 0.3e
I apologize for my terrible English.