If you are talking about a game with me when I'm at home then it will be extremely slow loading times. As I don't have a good secure internet at home and get disconnected more often than I get to finish a game.
We've got a gigabit connection and high end machines, but yeah, they are pretty bad. The load times are one of the many reasons we are moving to html5. You'll see some new HTML5 development next sprint. Every three weeks we'll be moving away a little more from the old flash dinosaur.