Does it matter if subtitles are enabled?
I’m testing with Plex Android Mobile 10.9.0.5657 (beta) on my Pixel 6a (Android 14), which does not support EAC3 audio. Phone is on Wi-Fi, local to Plex server.
Two versions of the same movie, one 720p, one 1080p, with external SRT subtitles.
If I do not select subtitles before playing, Plex immediately picks and plays the 1080p version.
If I choose subtitles before playing, I get the spinning orange circle.