youtube iframe_api working fast

HTML

<div id="player"></div>

JavaScript

var tag = document.createElement('script');

      tag.src = "https://www.youtube.com/iframe_api";
      var firstScriptTag = document.getElementsByTagName('script')[0];
      firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);

      var player;
    //=======================================================================
    //___________________Supper method
    //=======================================================================
        //duoc goi khi Iframe duoc load xong
        function onYouTubeIframeAPIReady() {
              player = new YT.Player('player', {
                height: 400,
                width: 400,

                videoId: 'usYGrAi5PE8',
                playerVars: { 'autoplay': 0, 'controls': 1,'showinfo':0, 'fs':0, 'iv_load_policy': 3, 'playsinline': 0, 'enablejsapi': 1,'cc_load_policy': 1   },
                events: {
                    'onReady': onPlayerReady,
                    'onPlaybackQualityChange': onPlayerPlaybackQualityChange,
                    'onStateChange': onPlayerStateChange,
                    'onError': onPlayerError
                }
            });
        }

        //Tu dong play ngay khi load xong
        function onPlayerReady(event) {
            event.target.playVideo();
            setTimeout(AndroidJSHandler.handlerOnReady(event.data), 2000);
        }

        var done = false;
        function onPlayerStateChange(event) {
            if (event.data == YT.PlayerState.PLAYING) {
                playing = true;
                getAvailableQualityLevels();
            }
            AndroidJSHandler.handlerOnStateChange(event.data);
        }

        function onPlayerPlaybackQualityChange(event) {
            AndroidJSHandler.handlerOnPlaybackQualityChange(event.data);
        }

        function onPlayerError(event) {
            AndroidJSHandler.handlerOnPlayerError(event.data);
        }

        function stopVideo() {
            player.stopVideo();
        }
        function...