The search seems to be working pretty well. The live results show larger numbers of results than the results page.
For example – if you did a search for “klimt” – the acf field shows 200+ results and the category shows 200+ results. But when you go the results page – only 50 results are shown. Is this capped somewhere? The products are all tagged with “Gustave Klimt” and belong to category “klimt, gustave”