I have PMS happily running on my NAS and was using my 2015 Samsung Tizen TV Plex App to access Plex. This has the issue of not being able to properly play .FLAC and other lossless formats (most of my collection).
Plex Player (app) on the Shield runs way better than it does on my TV.
BUT...
My main greivance with the Plex Player (app) is the loss of the ability to sort my music collection by Album Title.
Sort By Name, Dated Added, Date Played, Play Count and Rating are all very good but I am used to having all my music sorted by Album, especially as there is a large percentage of 'various artists' amongst my collection.
Am I missing something? Is Sort by Album Title deliberately omitted for a reason? Could it be added in a future update? It is obviously possible due to the fact that it is available on the Plex App for Samsung 2015 Tizen TV's.