I found that to just change the animations to fade instead of scale/pan. The duration is unaffected, it just makes it flatter and uglier. I wonder how fast things would feel if you could disable all animations, Windows XP style.
There’s no way in iOS anymore to avoid all of the weird transition animations. Reduce motion hardly does anything at all anymore.
In fact, it’s even more jarring than with animations.
I use it because moving the entire display can give me motion sickness. It’s doing exactly what it should do.