Improves scroll performance by making jQuery events passive. Run directly after jQuery script is loaded. Read more: https://stackoverflow.com/questions/46094912/added-non-passive-event-listener-to-a-scroll-blocking-touchstart-event

jquery-passive-listener.js

jQuery.event.special.touchstart = {
  setup: function( _, ns, handle ){
    if ( ns.includes("noPreventDefault") ) {
      this.addEventListener("touchstart", handle, { passive: false });
    } else {
      this.addEventListener("touchstart", handle, { passive: true });
    }
  }
};