Looking at the source, it looks like there are some 200 or so address records being returned, it can take a little for the database server to return that amount of data.
if in the source, i still see some bad addresses, there are some that are using PO Boxes:
street: 'PO Box 6281',
some that include suite numbers:
street: '9960 Central Park Boulevard - Suite 275',
some including apartment numbers:
street: '1700 NW 64th St. #400',
and some that include only the state:
full: ', , FL, ',
all of those will slow the loading of the map down.
the ones that include only the state will all resolve to the same place, but it will take multiple instances of accessing the geocoder because it is repeated over and over,