The typing delay hasn't popped up since the night I did the 12.3 update. The Maps slowdown is still gone, but a new problem has shown up: Maps sometimes forgets to respond to pinch/zoom.
I can open a Maps session and have no trouble manipulating the map. Expand, zoom, rotate, all work fine. Until it doesn't. I can't zoom or rotate, but I can still move the map around using two fingers. Scroll up/down/left/right works, but I can't do any of the other gestures. Quitting Maps and reopening doesn't bring back the full gesture complement either. The only thing that works is if I switch from satellite to explore, or vice-versa, a couple of times. Then suddenly all the gestures work again.