I assume cheap = low quality work? Then I don't think you need to worry. Because quantity and quality are not mutually exclusive.
Research shows artists who produce a lot of work are often the ones who produce the best work. The more you create, the better you get at your craft. The more you create, the more likely you will have a breakthrough. The more you create, the more likely you will encounter a truly special idea.
Don't believe me? Here's a research paper to support that claim:
Do highly productive researchers have significantly higher probability to produce top cited papers? Or do high productive researchers mainly produce a sea of irrelevant papers—in other words do we find a diminishing marginal result from productivity? The answer on these questions is important...
journals.plos.org
It was about producing research paper instead of fictional writing, but I believe it has the same principle. Pulp speed will inevitably lead to better quality.
So don’t slow down, Shishou. Don’t worry that maybe this pulp speed is wrong. Being able to write at pulp speed is the biggest reason I admire you, by the way. Keep going and the quality will increase. The quantity trajectory will inevitably give you the best quality. If you’re unhappy with your art’s quantity or quality, focus on quantity first. Create more art, more often. The quality will follow.
