To its credit, APC has great animation. Clearly the artists know their stuff. But the problem is, half the time it just feels like they're showing off instead of asking themselves, "Is this pose or piece of animation really necessary for this moment?" Even Clampett's cartoons (which John seemed to be emulating) didn't take so long to milk a facial expression or deliver a gag.
In fact, after 1942, Clampett's cartoons were very fast paced, which is the exact opposite of APC. The episodes just take forever and could be done in half the time. For example, "Stimpy's Pregnant" has a lot of scenes that just go on way too long, like Ren bragging on the phone about what a man he was, or Stimpy in the kitchen. "Onward and Upward" spends the first half in the bum's mouth just hammering it in that their living condition sucks. "Naked Beach Frenzy" has a lot of filler scenes of the ladies bouncing around that, while good eye candy, makes the episode much longer than it needs to be. But then, that episode had a paper thin plot anyway.
I've said this before, but I also think John K's Ren took a turn for the worse in this new series. He sounds way too gruff and low-pitched, and has a much more muddled accent. Eric Bauza does a passable job as Stimpy, but is no match for Billy West.
Finally, I'm just not a fan of how the characters looked in the new incarnation. Their visual appeal was gone. I much preferred how the character designs looked in the first two seasons.