I have 2-3 PC and from what I have experienced is not about how popular the server is but how long you play in that server. On PC 1 I play often in EN2 and now every time i join in EN 2 in 0-1 minute I start to lag. PC 2 I play in RU 1 on my other account and that starts to lag. Same thing with PC 3 i lag in EN 5 on my low account.THE issue on what I think is that the often you play on 1 specific sever that is where you will lag.