slow_load_detect.js

  
    window.slow = false;
    
    var slowLoad = window.setTimeout( function() {
        window.slow = true;
    }, 400 );
    
    document.addEventListener('DOMContentLoaded', function() {
      window.clearTimeout( slowLoad );
      if (slow != true) {
        var inputs = document.getElementsByTagName('video');
        for(var i = 0; i < inputs.length; i++) {
          inputs[i].setAttribute("autoplay", "autoplay");
          inputs[i].setAttribute("preload", "auto");
        }
      };
    }, false );