Browsing folders and groups is extremely slow

With this setting in groper.base.properties set to true, we have users that experience minutes long load times for the tree under 'Browse Folders'. When set to false, the problem goes away and the tree loads quickly. I would expect longer load times with the increased security for viewing the tree, but minutes seemed like too long.

1. if folders should be shown only if there is an object inside that the user can see
   security.show.folders.where.user.can.see.subobjects = true