What SLP “Style” are you using? The author changed the term from themes to Styles to differentiate between the two, WP theme and SLP style based on a WP theme. As you probably are aware, some are more responsive than others.
P.S. There are a slew of updates, all of the addon packs are now on 4.3 noticed you haven’t updated, also SLP is updated to 4.3.02