Using the Version Control view with large projects increases memory usage, which impacts Designer performance. In Designer 4.0, the memory footprint of the Version Control view has been reduced. Significant improvements have also been made for projects containing User Application drivers.
Version Control polls the Subversion (SVN) server to find out whether new updates are available on the SVN server. You can now control the polling interval by going to Window > Preferences > Novell > Designer > Version Control and setting the interval for checking the updates on the SVN server.