We just upgraded from 3.7 to 3.9 and looking for help on adding faceted search. We had the ajax filters plugin from nop-templates but we are having issues with someone scraping our site and randomizing ip addresses and user agents so there is no long term solution to try to proactively fight that and block ip addresses if they keep changing them. So our best solution was to remove the ajax filters plugin from our site since it is so heavy.
Does anyone have any other recommendations on how to get left handed faceted search to 3.9?