This shows his worst issue, and it feels really weird to even say it's an issue, but it is. Some developers half-ass things. Are lazy. Are uncaring about the quality of their product. Ocean is the opposite , where he goes to unreasonable and impractical extremes to maximize the quality of the game.
Whatever equipment he has, he'll always max it out. I bet, even if he had those A6000's, updates wouldn't be quicker. He'd just make the renders, animations, cinematics and whatever else even more complex or do more of them. He's a perfectionist to the extreme, and that really slows things down.
He doesn't appear to be able to say "Ok, this is good enough". He just reworked more stuff from Summers Gone too, because the assets used didn't meet his requirements. There will be better assets released between now and the next few years. What are the odds he doesn't try to redo more stuff with those newer, higher quality assets?
Others have mentioned Philly and Pinkcake, he's pretty much trying to be both of them at the same time. The artistic quality of Philly + the content quantity of Pinkcake. Not to mention doing 2 games at once.
Just as a matter of fact, it's better to make a B+ game with consistent updates rather than a A+ game that gets updated every once in a while. If you want to make money making adult themed games, you have to be consistent and reliable. People support developers so they can make the game they like, but at the end of the day they still expect their payments to result in something tangible.