So, uninstalled Plex for windows, deleted my plex folder in %LOCALAPPDATA%\Plex. Installed 1.12.1, rebooted, and verified plex.ini is read only.
Plex for windows stutters with live TV, and there are (for a lack of better term) micro stutters in 4k.
Non 4k movies and series do not stutter.
This is not a network or processing power.
There still something buggy with Plex for windows, PMP has no issues.
