Active Roles 7.4 opens slowly if large OU (1000+) was being viewed when the application is closed.

When opening Active Roles 7.4 after closing it with a large OU open, with 1000+ items, it loads extremely slowly. It appears to be loading users 25 at a time. Can see the same issue if looking at the MemberOf tab on a user, the groups load 25 at a time. Does anyone know what is causing this issue and how to fix it?

The current workaround is to make sure that users do not close the application with one of these large OU's open. Browsing up the to top level of the setup leads to a quick loading of the application, however the groups for users  still loads very slowly.

This also only appears to be an issue on one of our servers and not the other.