I am posting this as partially just a comment on what I have noticed but inviting anyone who may have knowledge about why I am seeing this phenomenon.
So, I recently recorded some episodes of Devil In Ohio on both the Playon Cloud recorder and Audials 2023 on my PC (I have been using Audials for a while and not Playon, so just tried it today). I had Channels import them from Playon initially and watched episode 2. Several scenes would do that annoying stutter that I have seen in the past, especially on action or panning camera shots.
I removed the Playon recording from it's folder and replaced it with the one I recorded using Audials. I then started the episode again and skipped forward to the same scene where it was so bad on the Playon version. It played back as smooth as could be.
Out of curiosity I loading each file in VLC so that I could look at the codec information to see what could be so different. There were only very minor differences in the fps in each file. Playon was 23.957 and the file from Audials was 23.970. Both are H264 MPEG 4-AVC and resolution 1920x1080.
So, why does the Playon version look so much worse on playback when all the numbers look pretty much the same?