https://www.drupal.org/project/xmlsitemap/issues/1130964
Add option to discard sitemap entries older that a certain amount of time [#1130964] | Drupal.org
Oct 7, 2020 - On a site with around 1M nodes and xmlsitemap the function xmlsitemap_node_xmlsitemap_index_links results in very slow queries SELECT n.nid FROM node n LEFT...