Originally Posted by
Valkyrie_Lenneth
People DC'ing is less likely a server problem, and more likely their own PC's. I had friends who used to have that issue every time they went to Idyllshire, or during the S ranks/Odin. They recently got new machines, and no longer have that problem.
Also, it becomes not a server problem, but a networking one, when the amount of people reaches a certain point. You can only transmit and receive so much data, and if you have to transmit that data to every player that is currently in said instance, it gets multiple time higher.