from my experience with navigation, i have some information to share with 
you

- brouter says ... for every 1Km of travel distance, the time is 1sec to 
design the route
- the osm maps is one open community and the users "draw" the maps into 
computers
- maps from big companies like google or Here or tomtom, etc, has special 
cars to collect data from the field

the results are ...
when the big cartographic companies collect data, they include info like 
traffic data for 24/7 of time (365days per year). Those data is also 
embedded into offline maps. The route algorithm use this info and during 
the calculation rejects probably over the 95% of roads. So, the design time 
into one trip will be very fast, 2-3 secs.

On Thursday, March 5, 2020 at 3:02:23 PM UTC+2, Episteme PROMENEUR wrote:
>
> Osmand routing calculation is very slow for long distance for many years.
>
> If you use for other app then no problem for example "waze"
>
> What is the problem ? No expert in Osmand team ? Not enough devs ? 
> Something else ?
>
> If you use other app then no problem for example "waze"
>
>
>

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