Hi @Matz,
Your symptom differs from the OP so we’re going to split your post into a dedicated thread momentarily.
@AgDev01, some useful tests that will help us isolate the issue:
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If you can, bypass the switch in this topology. Do you have any custom rules or settings you’ve enabled in any of your router or switch settings?
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Diagnostics show upstream requests from RoonServer on the PC are returned with generic refusals - software somewhere in this network, most likely on the RoonServer machine, is restricting Roon’s traffic.
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The dropouts you’ve reported in Roon are due to accumulated sample loss within the LAN, according to diagnostics. Several endpoints in a Grouped Zone are requesting samples that have gotten dropped en route between RoonServer and endpoint, within the network. The missing samples don’t arrive in time to buffer, and the audio stream breaks.
Taken together, these symptoms suggest RoonServer, on this machine, is having a difficult time downloading, uploading, or distributing audio to endpoints and to ARC.
If there are network components not mentioned in your description, please elaborate fully to equip us troubleshoot with precision. I recommend double-checking that RoonServer’s processes are excepted in any anti-virus or security software, particularly if it can statefully handle traffic.
As for the symptoms within ARC, we have multiple tickets created form this thread that should release into a future Early Access build. Those address the black screen issue on the head unit itself, as well as the crashing upon foregrounding the app.
We’ll watch for your response.
Thank you!