CSS，“-webkit-animation”在Google Chrome上占用过多的CPU

I use the following CSS:

我使用以下CSS:

.navbar .agesbar {
        height: 55px;
        background-image: url('/img/nicebar.jpg');
        background-repeat: repeat-y;
        background-position: center center;
        background-size: cover;

        width: 100%;
        -webkit-animation: agesTicker 120s linear infinite;
        animation: agesTicker 120s linear infinite;
    }

    @-webkit-keyframes agesTicker {
        from {background-position: 0 0;}
        to {background-position: -2446px 0;}
    }       
    @keyframes agesTicker {
        from {background-position: 0 0;}
        to {background-position: -2446px 0;}
    }
.navbar