Dear borisbnh,
Thanks for the detailed description.
Our system works only on the basis of messages sent by your tracker, so the more often the tracker send messages, the clearer the track will be drawn.
And therefore, the rarer the messages, the less detailed the track will be drawn.
Thank you for your suggestion to improve this point, but at the moment this is solved only by setting up the tracker correctly.
If you have any further inquiries, feel free to reach out to us. We are always glad to assist you.