Comment by mnmalst

I started using osmand a lot more lately while biking and I agree route calculation on the phone (hi Pixel 4a :) ) are super slow but for that reason you can configure alternative (online) routing engines in the settings https://osmand.net/docs/user/navigation/routing/online-routi.... I use https://openrouteservice.org/ which generates long routes in seconds and works great in general.