SourceTree has been progressively getting slower over the past few months.

It now often takes 10-15 seconds to refresh the uncommited changed view for all repositories, not just large ones. Interface hangs while refreshing. Selecting a changeset often takes 4-5 seconds to load changes and preview.

I love sourcetree. The interface is great! However, I've found myself going back to using the command line, now that it's slowed down