When zooming in and then switching the year filter ( or selecting All ), then all tracks are loaded at once and it can take some time until tracks are visible.
Instead tracks should be loaded in smaller batches and those loaded should be displayed. Best to start with tracks which are in viewport and then continue with the rest ( e.g. sort by distance to viewport )
When zooming in and then switching the year filter ( or selecting All ), then all tracks are loaded at once and it can take some time until tracks are visible. Instead tracks should be loaded in smaller batches and those loaded should be displayed. Best to start with tracks which are in viewport and then continue with the rest ( e.g. sort by distance to viewport )