What does the "Show products instead of variants" do when checked?

When you check “Show products instead of variants”, this will:

• change a specific setting on your Algolia index, [`attributeForDistinct`](attributeForDistinct API parameter) to `id` (the product id)
• make every request include the paramdistinct = true

Algolia will then deduplicate based on theidattribute, and return only one result for results that share the same value.

For a more in depth presentation of this Algolia feature, you can read the guide here:
Grouping results