We had the same, super long TTFB and lots of 5xx errors, seems to be mostly fixed now, but there are defiantly things that could be done differently, however given the pricing and feature set I'm happy with the service
Would love additional capabilities within the image optimizer such as methods of crop
To this day US PoPs are still pulling from EU storage servers (our storage zone is in NY, replicated in DE).
We've since moved away from Bunny, but if there's anything I can do to help improve this situation I'd be happy to do it because it is otherwise a fantastic product for the price.