Considering that slowing down FPS doesn't alter the images, and audio can be resampled with practically no audible artefacts, I doubt that quality would ever be

Considering that slowing down FPS doesn't alter the images, and audio can be resampled with practically no audible artefacts, I doubt that quality would ever be an issue. As long as it's done with the proper care of course. I would think the main consideration is workflow these days.