When adding a large number of placemarks to the map, clustering them helps avoid a large loss in browser performance when displaying them.
For comparison, in this example, you can add placemarks to the map both combined in clusters and in regular collections.
When adding a large number of placemarks to the map, clustering them helps avoid a large loss in browser performance when displaying them.
For comparison, in this example, you can add placemarks to the map both combined in clusters and in regular collections.