Thanks for such a thorough and informative reply @james, much appreciated!
Sorry, I was not trying – at all! – to come across as ungrateful for the focus on speeding up the app in the last release. The speed improvements are actually what I’m most excited about from this update (as nice as profile pictures are), so I am hugely appreciative of all the time you and the team must have spent. I know this kind of thing can be very time intensive without having something flashy to point to at the end.
I’ve only used the app once or twice since the update, and my feed seemed to update instantly when I did – previously (on a 5S) there was a delay of a few seconds, which was not great. So I think this has made a difference. In my above post, I was talking purely about the maps aspect. I’m sure once I’ve used the new version of Monzo a bit, the tiles will be cached, and I won’t have the same issue with a delay in the map appearing. There are still the visual style aspects, but I appreciate you have good reason for switching, and especially that you took the time to explain them.