It was noticed that SuggestionPopup (or rather the skin) was always setting the ListView it creates to be variable item height, which is rarely the case. This causes extra processing for no reason. But it may, in fact, be required for some renderers, so leave it the default, but add a new style to set it to false.
pivot/trunk/wtk-terra/src/org/apache/pivot/wtk/skin/terra/TerraSuggestionPopupSkin.java