Out of sync DLNA casting

Issue description:

I have been using DLNA casting to my Sonos speakers for about 2 years now with no issues. About a week ago I suddenly started having issues where Symfonium fails to sync with casted media and has general issues with playing, skipping and scrubbing through media.

I do not have transcoding enabled and all media is permanently cached.

Logs:

Upload description: NateG

Additional information:

 
Attached is a Google drive link showing the aforementioned behavior from Symfonium.

 

Reproduction steps:

 
I doubt you’ll be able to reproduce since I haven’t seen any other issues regarding this.
 

Media provider:

Jellyfin

Screenshots:

     

Offline cache ia not used if server is accessible unless you force that on the renderer settings.

So start by forcing that.

Sorry, but where would I find that setting?

I should also mention that I am on Version 13.1.0B3. This issue started on the first beta this version.

In the cast bottom sheet there’s a setting button near each renderer.

After testing with that setting enabled there is zero change. The exact same issue occurs.

Reboot that device, disable gapless on the renderer settings.

Nothing was changed regarding that and I cast to Sonos every day.

I tried restarting clearing the app cache, disabling gapless, tried to transcode, all with the same issue

Does the device works correctly from other apps on the same phone ? Provide new logs just in case.