> It can be pretty annoying when a book has multiple narrators as the quality can vary significantly, so you might get deep into a book before you start getting consistently bad narrators.

I think one of the most annoying experiences I had was when they changed narrators in the third book of the Takeshi Kovacs series. It wasn't even that the third narrator was bad, especially, just that he sounded wrong—but I was far too invested to set it aside at that point.