This can be easily added by a short script and a css rule.
The CSS Part
.forcenoshow { display:none !important}
The JS Part
jQuery('#yoursliderid').bind('.revolution.slide.onafterswap',function() {
var randomindex = Math.round(Math.random()*30);
jQuery('.current-sr-slide-visible').find('.tp-caption').each(function(i) {
if (i!==randomindex) jQuery(this).addClass("forcenoshow");
});
This will give all layers within the current slide a "display:none !important" attribute to hide the layer. Only 1 layer from the slide will be visible.
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