I started playing some 2 months ago.
I notice that in some zones i am proposed to move to more populated server quite often.
I haven't had such issues in Queensdale, but now that i am playing in Sparkly Fen, i am requested to move every 20-30 min, which is rather annoying when it happens in the middle of a meta event. After the switch i often find the event already completed.
I usually play in the evenings, which should be the busiest time for the game.
I don't know if that has something to do with overall population or the megaserver mechanisms. It just gives me this feeling of playing in a ghosttown game.