Phonegap图片lagg

Question

我的手机和图片有问题。我正在开发一个phonegap应用程序，但由于某种原因，图像在应用程序上非常滞后。当我在Chrome浏览器中时，它们在网站上不是这样的。

网站链接http://www.morrigandev.com

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.overlay{
	pointer-events:none;
	position:absolute;
	width:100%;
	height:100%;
	background-color:rgba(0,0,0,0.5);
	z-index:9999;
}

.dark-overlay{
    background-color:rgba(0,0,0,0.7)!important;
	opacity: 0.4;
}

.slider-image{ background-size:cover; background-position: center center;}

.slider-image-1{background-image:url(../images/pictures/3.jpg);}

.slider-style-1{
    position:absolute;
    width:100%;
    top:50%;
    z-index:9999;
}

.slider-style-1 p{
    text-align:center;
    width:70%;
    margin-left:auto;
    margin-right:auto;
    font-size:14px;
}

.slider-style-1 h2{
    color:#FFFFFF;
    text-align:center;
    font-weight:800;
    text-transform:uppercase;
    font-size:51px;
    line-height:50px;
    padding-bottom:0px;
}

.slider-style-1 h3{
    color:#FFFFFF;
    text-align:center;
    font-size:13px;
    font-weight:700;
    text-transform:uppercase;
    margin-bottom:30px;
}

.slider-button-1{
    width:200px;
    margin-left:auto;
    margin-right:auto;
    font-size:12px;
    font-weight:500;
    text-transform:uppercase;
    text-align:center;
    padding-top:12px;
    padding-bottom:12px;
    font-family:'Roboto', sans-serif;
    margin-bottom:20px;
    transition:all 200ms ease;
}

.slider-button-1:hover{
    transform:scale(0.95, 0.95);  
    transition:all 200ms ease;
}

.button-green{			background-color:#27ae60; color:#FFFFFF;}
.button-green:hover{	background-color:#2ecc71;}

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    <div id="content" class="snap-content">
        <div class="header">
            <a href="#" class="open-menu"><i class="fa fa-navicon"></i></a>
            <a href="#" class="open-more"><i class="fa fa-envelope-o"></i></a>
        </div>
        
        <div class="full-bottom" data-snap-ignore="true">     
            <!-- Image Slider Style 1-->
            <div>
            <div class="overlay dark-overlay"></div>               
                <div class="slider-image slider-image-1">  
                    <div class="slider-style-1" style="height:270px; margin-top:-135px">
                        <h2>NEST PRO<br>LEAGUE</h2>
                        <h3>COUNTER STRIKE GLOBAL OFFENSIVE</h3>
                        <p>
                        </p>
                        <a href="#" class="slider-button-1 button-green">Get Started</a>
                    </div>
                </div>
            </div>
        </div>
    </div>

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这是一个关于应用程序如何看待lagg的GIF。 http://i.imgur.com/VqACJXm.gif那些图像正在滑动，不应该这样做：（