It slows it down far too much for me. What I've found after swithcing to --dangerously-skip-permissions is that while the intermediate work product is often total junk, when I then start writing a message to tell Claude to switch approach, a large proportion of the time it has figured that out by itself before I'm finished writing the message.

So increasingly I let it run, and then review when it stops, and then I give it a proper review, and let it run until it stops again. It wastes far less of my time, and finishes new code much faster. At least for the things I've made it do.