Preloading in G'MIC GUI filter

Is it possible to preload pictures from a folder in g’mic? One example filter that would benefit from this is Picture Mosaic in Testing->Reptorian.

I suppose you could ask it to retrieve an image from a location.

That’s easy to do. The problem here is that if I change filter setting, the picture loading will start again. I would prefer to avoid that.

The preview command is separate from the main one, so I think you could manage something.