How to make tinySlider not lag when switching tabs?

Question

Slider

I use this thing:
https://github.com/ganlanyuan/tiny-slider

html:

<div class="container">
  <div class="slider">
    ...
  </div>
</div>

js:

var sliderBase = tns ({
    container: '.slider',
    items: 2,
    autoplay: true, 
    nav: false,
    controls: false,
    prevButton: false,
    nextButton: false,
    controlsPosition: false, 
    controlsText: false, 
    controlsContainer: false, 
    touch: true, 
    autoplayTimeout: 3000, 
    speed: 12000, 
    slideBy: "page", 
    preventScrollOnTouch: true,
    mouseDrag: true,
    swipeAngle: false,
    autoplayButton: false, 
    autoplayButtonOutput: false,
});

Further, if I started autoscrolling and, for example, went to another tab, after returning to the slider, it lags terribly. How to fix?