After the update of One UI 6, the media output settings are not working properly. Earlier you could stream upto 2 devices easily but now only 1 device is aboe to play the media.
As per your query, we request you kindly share the log file. Also, share video clips and images for better understanding and report this issue with the log file. This will help us to further investigate and resolve this issue.
Samsung Members Application (Open Samsung Members Application > Support> Tap on error report > Type your query > Send).
Note: To ensure relevant log information is included in the error report, submit the report within 3 minutes of encountering the bug or error, and do not terminate (swipe away) the Samsung Members application until you are notified that the report has been sent. This can take up to 5 minutes.
