Please try updating to the newer 1.15.0.707 build.
There were a couple different playlist items fixed in that release.
After updating if you are still having issues with the 2nd Vizio TV, we would need to get your client & server debug logs.
https://support.plex.tv/articles/200250417-plex-media-server-log-files
Troubles? Read here to learn how to provide great logs.
https://forums.plex.tv/t/troubles-read-here-to-learn-how-to-provide-great-logs/124945
