Post Grid Plugin – Filterable Grid only showing 6 items

So far so good on the plugin. Question on the Filterable grid.  I have this setup on https://www.bufflehead.us/franklin/recipes/.  I have the Post Per Page setup to 12, but it will only show 6.  I have also tried the -1 value, and it only shows 6.  If I change the View Type to Normal, it shows the 11 items.