Today I imported a track (from myrouteapp.com. This track has a length of 
410 km and contains 53 routepoints. I choose this track for navigation with 
the option 'calculate route between points'.

I took my motorola e4plus more then two whole minutes to calculate the 
route.  

The starting point  of the route was by my house.  After the start OsmAnd 
let me four time take a right turn  and then I am back at my home again. 
Then OsmAnd continues with the route. The option 'calculate route til first 
and last point' is disabled. It looks as if OsmAnd recognises the first 
point after it is passed so it wil find the shortest route to this point 
and therefore creates the loop.
The calculated route is almost the same as the track. There are a few 
points where the route is different from the track. I tried some navigation 
option in OsmAnd but I always got the same result. So I think this has 
something to do with the map.

I will not navigate this route. I allready noticed that recalculating can 
give strange behaviour on shorter  tracks (100km). Therefor I can expect 
problems with this 400km track.

I like the feature 'Calculate the route between points' very much but at 
this moment I think that the route calculation should be improved. I hope 
to see an improved version in a coming version of OsmAnd.

Op maandag 1 juli 2019 13:43:39 UTC+2 schreef Peer:
>
> I created a track with waypoints on MyRouteApp.com and saved it to the 
> tracks directory of OsmAnd.
> I choosed the track for navigating with the option 'Calculate route 
> between Points'.
>
> At first the navigating was fine. After approximately one hour OsmAnd was 
> starting to act strange when it should recalculate a route. The 
> recalculated as not logical.
> example 1:
> I should take a turn right into a side street. But OsmAnd wants me to go 
> straight ahead, make a u-turn on a roundabout 200 meters further and then 
> make a left turn into the side straat. 
> example 2: I have to drive straight ahead. But Osmand wants me to turn 
> right into a side street, make a uturn after 100meters and then turn right 
> again to follow the orginal route.
>
> This happened several times, always when recalculating a route. I do not 
> know if this is problem in OsmAnd (version 3.3.8) or that my phone (Samsung 
> trend, 6 years old) is just not strong enough for performing this 
> calculations.
>

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