SourceTree, since updating, has become unusably slow. I find myself going back to the command line. Simply selecting multiple files in my working copy causes the application to beachball and either take minutes to become responsive again or completely lock up indefinitely.
What are some steps I can take to help you find repro steps / isolate the problem?
The project is built in Unity, and the prevalent issue is that staging files takes a long time. There is definitely something about working with Unity that SourceTree doesn't like.