AppleTV Plex - Starts playing (can hear audio) but no video (spinning wheel)

Server Version#: 1.42.2.10156
Player Version#: 8.45 (9684)

While trying to play some episodes of Star Trek Lower Decks - Season 4 (transcoded from my bluray discs) I get a blank video screen with the spinning loading wheel. The episode plays in the background (can hear audio). Changing to the old player fixes this, don’t really want to flick back and forth between old and new, any thoughts?

The video plays fine on web and phone through iOS app.

iOS app shows Direct Play for both Video and Audio (1080p HEVC Main 10 / DTS-HD MA 5.1)

(Broken) Apple TV stream shows the same (Direct Play 1080p HEVC Main 10 / DTS-HD MA 5.1)

(Working) Apple TV stream shows :

1080p (HEVC Main 10) (hw)

1080P (H264)—Transcode (hw)

English (DTS-HD MA 5.1)

AAC—Transcode