From documentation:
Distance threshold in meters. Marker position only updates if the entity has moved more than this distance. Prevents unnecessary map updates from GPS drift. Useful for clustered markers.
I read it that this option only affects position of marker itself on the map - it is not redrawn and does not redraw undrlying map until position changed by more than set threshold. It does not affect entity position trials, as stored in recorder, so all of position points are drawn on the map.
What you want to achieve should be rather done by integration you use to determine position of entity/person, so it is filtered at source.
Thanks for clarifying. That makes sense. I misinterpreted this definition.
Has anyone else using this card found that it sometimes freezes on first load, with the map being just black but with its height stretched out maybe to infinity? I'm getting this occasionally, on both the Android app and in Firefox, and it fully freezes/crashes both with a huge memory leak.
If anyone has any guidance on how best for me to debug this then let me know 
it'll probably be something to do with my particular configuration of it/its placement within a dashboard, being an edge case that others haven't hit.
I'm using it at the most zoomed in level it can go, to show the routes of two Tractive cat trackers.