Encountering slowness in datasources with large # of tables

I am working with a database with over 3000 tables  in it and it  seems to encounter a significant slowdown when I do the following.

Go into data sources

Click the minus sign on my specific datasource and then click the minus next to my database to list all the tables.

The  list will popdown but then pycharm will become unresponsive and the  loading icon shows up to the right of my database name under  datasources.  It will take anywhere between 5 to 10 minutes for Pycharm  to start responding again.

I am connecting to an SQL  Server 2005 DB running on windows 2008 using the jtds driver that is  downloadable through pycharm when adding my datasource.  Is this to be expected since there are so many tables?  Other smaller databases seem to run much faster so I am going to experiment with the table filtering but was curious if others observed this issue.