Steve, some technical bullshit!
The map is built from 1300 pieces a 2-3kB!
So it does a while to load first time You use it! But once it's loaded, it's stored in the chache-memory! So the more you use it the faster it will be! Compared to a map stored in one piece this one is much much faster!
But a warning for first-timers is a good ide!
Another beer to be collected at Shooters!
/sunem