Eu Server lag

at first sorry for my bad english.
i have a question, why is only the Eu servers always laging. We cant play on it. What happend?

a) It’s under DDoS a lot
b) It’s virtualized (we figured out unity servers don’t like virtualized environments by now, so we’re planning to re-do EU)
c) Buildings. Players. Many of them.

=> We acknowledge this issue and we’re working on it.