Disorted slider on mobile / tablet

If your slider's background image is disorder on mobile, you are using the Stretch fill mode ( Slide settings → Background → Fill mode) for your slider background, and these options don't work very well with each other.

You should modify the Fill mode to something else, for example, fill.

The problem can be more noticeable if you're using the Minimum height ( Size → under Responsive: Slider height → Min) or work in Content mode and one of your slides makes the slider larger on small screens.