Summary Carousel Autoplay

script>
   Y.on('domready', function () {
       var galleries = Y.Squarespace.GalleryManager.getGalleries();
       var duration = 4000;
       var gallery=galleries[0];
       var carousel=gallery["gallery-design"];
       var totalGroups=carousel.get('totalGroups');
       var currentGroup=0
       var container=gallery.get("container");
       var nextBtn=Y.one(gallery.get("elements.next")._nodes[0]).on("click",function(e){
           e.preventDefault();
           e.stopPropagation();
           advanceCarousel()
       })
       var prevBtn=Y.one(gallery.get("elements.previous")._nodes[0]).on("click",function(e){
           e.preventDefault();
           e.stopPropagation();
           backupCarousel()
       })
       Y.one(container._node).get('parentNode').on("mouseover",function(){
           clearInterval(myInterval)
       })
       Y.one(container._node).get('parentNode').on("mouseout",function(){
           clearInterval(myInterval)
           setMyInterval()
       })
       var myInterval;
       function setMyInterval(){
           myInterval = setInterval(function(){
               advanceCarousel()
           },duration)
       }
       setMyInterval();
       function advanceCarousel(){
           if(currentGroup==(totalGroups-1)){
               currentGroup=0;
           }else{
               currentGroup++;
           }   
           carousel.goToGroup(currentGroup);
       }
       function backupCarousel(){
           if(currentGroup==0){
               currentGroup=totalGroups-1
           }else{
               currentGroup--;
           }
           carousel.goToGroup(currentGroup);
       }
   });
</script>

This one was created later, and I think I would try it first:

 Remember to add this to the page header code injection for the summury page OR the header code injection for the Index if it's in an Index. Also it may not work in preview. Try testing it from an incognito window in your browser.

<script>  
 Y.on('domready', function () {
   try {
     var container = Y.one("#reviews"); /*change this to the slug of your page*/
     var gallery = Y.Squarespace.GalleryManager.getGalleryByContainer(container);
     gallery.setAttrs({
       "autoplay":true,
       "autoplayOptions": {
         "timeout":9000, /*make this higher to decrease speed, lower to increase it*/
         "randomize": true
       }
     });
   } catch (e) {
     console.error("Could not configure Gallery autoplay.", e);
   }
 });
</script>