How to load sliders on subsequent pages in GD Infinite Scroll?
user gooddesignusa kindly showed me a solution:

scripts.js in the theme folder has to be like this (can also be created if no scripts.js is there):

(function ($, Drupal) {

  Drupal.behaviors.STARTER = {
    attach: function(context, settings) {
      // Get your Yeti started.
    }
  };

  //runs on document ready. 
    $(function(){
    //checks for autopager function and checks if ID of view is on page
    if($.autopager &amp;&amp; $('#gelaendespiele').length){
      //binds ajaxSuccess 
      $(document).bind('ajaxSuccess.autopager',function(event, xhr, settings){
        //rerun function after ajax is done loading
        $(this).foundation('reflow');
      });
    }
  });

})(jQuery, Drupal);


Then I had to uncomment line 72 of my info file (make sure scripts.js is included)

Finally clear all caches.