try to maipulate slider step

templates/client/default/assets/js/layers-ui.js

@@ -7306,7 +7306,7 @@ var rangeSlider = function () {
                 value: this.value,
                 min: this.config.min,
                 max: this.config.max,
-                step: this.config.step,
+                step: 512,
                 slide: function slide(event, ui) {
                     that.updateInput(ui.value);
                 }