He spends most of his time on low quality animations. His animations are really very primitive and unnatural, and they take 80% of his development and rendering time.
His animations are in fact totally average for VNs, he's at the same level of many other developers that use DAZ to animate. Some others VN developers are able to make better animations with DAZ, it's true, but it's not that DPC's are among the worst. He's average and that's not a problem for this VN.
His animations are mediocre and embarrassing only if you compare them with what skilled people do with Blender/Maya, but those are people focused mostly or only on animations. DPC has so many aspects to deal with, so he cannot excel in anything, he has to to mass-produce as he works alone. Also, I don't think animations take him 80% of the time. A lot of time, indeed, but not 80%. Regarding
rendering time, that's true but he has many PCs so they don't block his work. They'll probably be the bottleneck again for the release, because he will have to pose others when he makes the last lewd scenes.
You have also to consider that many (probably most) of his patrons
pretend animations, so he has to make them, even if they feel crap if you are used to look at good ones. Then he gradually started feeling too excited doing animations and exceeded, now making long cutscenes that 99% of the players will see once, then skip like a plague in the following replays. People cannot protest on Discord because they'll get banned, so he believes everyone thinks he's the new Kubrick/Sergio Leone/Scorsese.
But
consider this: he still produces most content, per year, than the majority of the other developers (also because he has the income to afford it).
So, just deal with it, this is what's going to be and nothing is going to change it, he will never change his workflow. Let's be patient and play other VNs.