I have to use a Mac for work and it drives me crazy. I disabled everything I could find, enabled reduced motion preferences or whatever it's called and still got some animations.

My "solution" is to use Aerospace [0], which reimplements window management. That's the only way I found to not have animations. Unfortunately i still feel some delay when switching windows compared to i3wm/sway in Linux.

[0] https://github.com/nikitabobko/AeroSpace