I linked to an example in the comment. In that particular case, I'd say probably 10-20x faster. I do embedded, backend, web and mobile app development.

I also notice these things. Otoh i spend definitely less than 50% of my time typing in code so it is impossible that it gives more than 2x speedup. And sometimes i lose time babysitting and rewriting stuff so all in all it is kinda no productivity gain.