The Dragon Prince is CG animated (obviously), but used a frame-skip effect in rendering as part of an attempt to feel more like traditonal animation. As you've noted, it doesn't work, it just makes it look choppy. This may be because A) traditional animation actually doesn't have a constant framerate if we're talking a about frame changes, as the number of unique motion frames allocated to the same action in the same amount of time can vary, and whether they're keyframes or tweens also changes things, or because B) it was a really stupid idea to begin with.

I strongly suspect that the only reason they're still doing it is because it means they have to render significantly less frames of animation, saving them quite a bit of time and possibly money on the project.