Executive meddling, poor pacing, and even poorer management.
OK KO shares a lot of issues with SU from executive meddling/bad management. It wants to be an episodic Saturday morning cartoon but also have a deeply connected lore/plot. However they also want to have 11 minute episodes along with "bomb" format similar to Stranger Things or other Netflix/Amazon shows.
The bomb format kills pacing as everything is released all at once, encouraging binge watching rather than slowly absorbing the show if it was syndicated. Bomb formats work for shows like Stranger Things because each episode is at last an hour with the next episode being connected and/or a refresher of the previous eps. OK KO/SU tries to do this but in 11 minutes instead on top of having non-sequitur episodes that are completely separate from the main plot. So not only are they rushing themselves for time, their also wasting time with filler.
OK KO also cannot do stakes or actual tension in a worthwhile manner. It wants to be absurdist like Teen Titans GO but also have it's mystery/thriller elements against Boxmore, Venomous, etc. This could work in theory, but only if they had more than 11 minutes and they cut out the filler. So each episode boils down to 7 minutes of wacky nonsense, 2 minutes of action/tension, 1 minute wrap-up/screen fade, and the last minute to roll credits. This works in TTGO because nothing is supposed to be taken seriously as it's supposed to be 11 minutes of randumb distraction. It doesn't work for OK KO/SU because they want the show to be taken seriously and have weight between episodes.>TL;DR
OK KO is managed like a typical Netflix/Amazon series but half-assed at every point. Half the budget, half the production/show time, half the story, and definitely half the quality.