Stephen must be saving a ton of bandwidth with the new engine. As we speak in the last 20 minutes I`ve been booted 8 times and needed to log back in. Maybe thats what the new engine does so that you get so annoyed you just go do something else.
He has been talking for a long time about using a new game engine that makes it easier to implement new upgrades. The downside to that may be reduced speed. Personally, I don`t think it`s really all that bad.