'Attach to road' performance

[Yaqana]

I explore some new multi-day hiking trails and I often import tracks as GPX from hiking websites. They are always made of many points connected with straight lines. To use the full potential of OsmAnd I try to attach them to roads. I have never successfully attached to road any of them. It just seems to take forever. I just waited an hour for a 1.3k points track and nothing happened. I tested with smaller tracks and even 14 points took a few seconds. 100 points probably less than a minute.
The OsmAnd website notes that it can take very long time if there are many points, but it doesn't really say how much is 'many'. Is importing a track with this many points unusual and it's normal attaching it to road never ends? Maybe the user guide (which I think is great btw) could be a bit more precise about this limitation?

You can find an example track here

I'm using iOS.

[Sonwon1]

I always look for a different import format to avoid using 'Attach to road' because I find the performance very poor.

[DmitryAlexei]

@Yaqana Your track is made for pedestrian profile, and it is 153 km long (this is quite a lot!).
For long tracks with huge number of points Attach to roads option may work slowly. Please refer to our documentation https://osmand.net/docs/user/navigation/setup/gpx-navigation/#attach-to-roads
As a workaround, you can increase the threshold distance. You can also cut your track into smaller pieces and attach them one by one.

[Yaqana]

@DmitryAlexei thanks for reply! I was just curious if it's expected or it's a bug. Using "attach to road" on long tracks would be the simplest way for my case, but if the app is not meant to do that then I can live without it