Now, let's look at where the problems arise. Then 7 seconds later, Bot 2 on server D sees the user join and ops him. A think that Bot 1 opped the user, and all the users on server D think that Bot 2 opped the user. The user himself would, of course, think that Bot 1 opped him because that bot is closer time-wise. This means that even when lag is particularly high, conversations can quickly become intolerable.
Users can avoid the problem by simply moving to a common server.
Ideally the lag from server to server is in the milliseconds, in this case, it isn t usually a problem. However, sometimes due to problems with the network as a whole, they can range up to 20 seconds from server to server. There are several reasons for these delays. A netsplit occurs when two servers lose contact with each other. Usually the servers have a noticeable time difference between them, which grows to a point where they can't exchange data quickly enough, so the servers physically split.