Swiper: 2 synchronous sliders with different speed

swipers.js

var homeBannerTitleSwiper = new Swiper('.home-banner_title-slider', {
        pagination: '.home-banner_slider-pagination',
        paginationClickable: true,
        prevButton: '.home-banner_slider-prev',
        nextButton: '.home-banner_slider-next',
        speed: 750,
        slidesPerView: 1,
        spaceBetween: 15,
        loop: true,
        onlyExternal:true
    });

    var homeBannerSwiper = new Swiper('.home-banner_slider', {
        pagination: '.home-banner_slider-pagination',
        paginationClickable: true,
        prevButton: '.home-banner_slider-prev',
        nextButton: '.home-banner_slider-next',
        speed: 1500,
        slidesPerView: 1,
        spaceBetween: 15,
        loop: true,
        onlyExternal:true
    });

    homeBannerSwiper.on('onSlideChangeStart', function () {
        homeBannerTitleSwiper.lockSwipes();
    });

    homeBannerSwiper.on('onSlideChangeEnd', function () {
        homeBannerTitleSwiper.unlockSwipes();
    });