by "high quality" I think they expect something like Midnight Paradise, Echoes of Lust/Lust Theory, that sort of thing, not Pixar Toy Story, small animations in Daz take a day or two, and another day or two to render, besides, there are few not so bad aniblocks for sale, which take even less time to implement, and imperfections can be hidden by adjusting camera etc
it is all about effort
some "artists" here talk about rendering frames to 3000 samples, then of course it will take weeks, but that isn't exactly smart, just like pngs and max quality jpegs to balloon the game size