Edit: (link to my log files removed) I’m not interested in troubleshooting this any more. Its a known issue as described here: Mac Player stuttering video playback - #12 by gbooker02
I don’t see any Plex staff responses in that thread even though its identical to my issue.
To confirm, playback is choppy in the latest version of MPV as well as Plex HTPC. Playback is smooth in VLC.
Playback is also smooth in PlexHTPC-1.59.0.121-1c051efb-universal
why are older versions removed from the website?
Somewhere between 1.59 and 1.70 a bug was introduced
See above for comparison of CPU/GPU usage for the same movie played back in Plex HTPC 1.70.1.303 and then VLC.