Live TV/DVR not working on android TV Mi box S

[collet_pascal_outlook_com]

Greetings , I’ve just bought plex pass to have access to live tv
It’s working on web browser, phone and tablet app but not on android tv mi box S.
device used is an hdhomerun dual with latest january beta firmware, plex is setup with the official plex docker.
Symptoms are : server side control panel shows it is streaming, on the hdhomerun tuner is indeed used.
but on the app its just black screen

can anybody help
thank you
best regards

here some logs

01-24 21:09:38.538 i: Fetching [method:GET] https://192.168.2.17:32400/:/timeline?duration=0&guid=plex%3A%2F%2Fepisode%2F5e1a850d95e57800406c5292&key=%2Flivetv%2Fsessions%2Fa75b3db4-006b-45d7-aaff-c3e078f0e8bc&playbackTime=0&playQueueItemID=0&ratingKey=6796&state=playing&time=0&token=...6sTU&X-Plex-Client-Identifier=6ba5bd7c8c953d0c-com-plexapp-android&X-Plex-Token=...6sTU 01-24 21:09:40.095 i: [LiveTV] Signal quality is not available. 01-24 21:09:43.817 i: [LiveTV] Signal quality is not available. 01-24 21:09:46.880 i: [LiveTV] Signal quality is not available.

[collet_pascal_outlook_com]

ok so I finally found what’s wrong !
It’s the auto framerate sync feature, when it’s enabled the server is streaming but the app won’t render anything, even for movies , live tv or tvshows.
It was working before the last update though !!