I work on a lot of small projects on daily basis and need to switch often.
Switching from "Tab" in SourceTree is very slow. Sometimes up to 15 seconds. How can I improve this behaviour?
I know this is an old question, but you could also try this:
https://stackoverflow.com/a/24045966/371917
$ git config --global core.preloadindex true
$ git config --global core.fscache true
$ git config --global gc.auto 256
Secondly, here is a post that explains that git gc --aggressive
may not be a great idea.