Advanced Search Filters causing glitchy iPad scrolling

I started noticing very glitchy/delayed iPad touch interface performance, and have traced the problem to Advanced Search Filters.
When it is enabled, it often takes several swipes and/or taps to get response on any pages (even pages with no GD-related content).

On all pages the problem shows when trying to reverse direction of scrolling (need to swipe twice to scroll up after scrolling down and visa vera).

The problem is at it’s worst on my Enfold masonry pages, which are nearly un-navigatable. I’m using Enfold’s masonry display to show my directory listings, so this is a major problem for me.

When Advanced Search Filters is disabled the problem disappears.