Selecting multiple file in SourceTree makes it too slow

In case if you are working on a project and frequently need to delete updated files from you project. One way is to use source tree to list all file which got updated or newly added. When you try to select all the files and delete using SourceTree, it slows down. This happens because SourceTree compares the diff. You can use the diff settings to limit the comparison base on file size and pattern.

Preferences page

Change settings as per your needs.