Thank you for the report and for your gracious display of patience in awaiting a staff response.
Please keep the VPN off for troubleshooting - when activating diagnostics for your account, we’ve noticed an unusual volume of authentication failures and timeouts associated with basic functions in Roon, like requesting the time from upstream servers or connecting to streaming service servers.
Do you ever encounter playback issues when using Cast to play back to a single AV receiver? These might look different than the Group playback failure - dropouts, random pausing, or hanging might be symptoms.
Can you please provide a screenshot of the Signal Path in Roon when you’re playing to the affected Cast Group? Additionally, please share an approximate timestamp of the next group playback failure you encounter. We’ll activate diagnostics to see precisely what Roon is passing to Cast.
Many thanks for the reply. Don’t worry too much about the time it took. I’m in no rush!
When I have minute I will do some screen shots. I have no issues casting to single AV receivers only when trying to cast to them simultaneously. I have a strong fiber internet/Wi-fi connection and a top end router.
I will try and do a group cast this week. I have had another problem. I decided to connect through HDMI I thought it would give a better signal path than casting (I might be wrong on this) this worked for one day. The following day the output source for HDMI in settings>audio had disappeared. The signal was going straight to the TV which is connected to the AV via eARC. Any ideas as to why this is happening? I’ve looked at all the probable causes on the AV and can’t find the issue.
Please accept our apologies for the long delay here.
We’ve activated diagnostics and there appear to be two Wasapi HDMI drivers available to Roon. These are associated with two separate Zones, titled hdmi and Unnamed. Was the creation of the second Zone intentional? It’s possible that the operating system is defaulting to one Wasapi driver and Roon is choosing another.
Do you have the most recent display drivers updated?
We’ll keep an eye out for you response. Thank you again for your patience.