Hi, would you mind sharing the version of the SDK you are using?
In 200.1 we had a bug that prevents more specific progress being reported between 15% and 92%, and that issue should have been fixed in 200.3 and above versions (issue 4032 for internal tracking). Please share more details, so we can debug further - maybe it's something that we still need to fix. 👀
In terms of slow download, it could be related to large amount of tiles and data. Try a more "zoom-in" scale and see if it improves, say level of detail around 20 - 21. If it still takes more than 1 minute in a normal network, it would be abnormal.