I noticed that checking to see if a field “is in” or “isn’t in” the result of another search acts like a filter but uses search, which is faster.
Thing is that some of the fields will only allow “equals” which means I can’t use this improvement.
For example, here I don’t have any information to uniquely identify the preset-array other than its unique id field, but the unique id field only allows a “=” evaluator
For comparison, I was able to use the “name” field of image-thing since it’s reasonably safe to assume the uploaded images will have different filenames. It’s not perfect, but it’s good enough. The “name” field allows me to use “isn’t in” so I can exclude any image-thing that is in the second search.