SourceTree becomes very slow, hangs or crashs when commits contains many changes. The application becomes irresponsive 

Here's a sample project to reproduce the issue:

https://github.com/Benabee/sourcetree-crash

It cannot display the last commit. It hangs undefinitely.

On other projects with more changes, there's a message about memory usage becoming too high and eventually SourceTree crashes. I can add more commits if you want to reproduce the crash.

Here's a overview of the committed changes (in Visual Studio code)