Hi @Petri ---- Thank you for the touching base with me, very appreciated!
You’ve mentioned the following in regard to your network topology:
Roon Server on my Windows 10 desktop computer (i7 6700K, 16GB RAM, 256GB SSD for OS, and 1TB SSD for music). This computer is connected to the Apple Airport Extreme by an ethernet cable.
Then the Devialet 1000 Pro is connected to a switch (AQ-Switch-8) in an another room. Also Apple Airport Express is connected to the same switch. The Airport Express is showing following information on WIFI connection quality: speed: 300 Mb/s, RSSI: -60 dBm.
If possible, I would highly recommend testing with the Devialet 100 Pro removed from the switch and with a direct connection to the Apple Airport Extreme. As mentioned in my previous post, whenever we are troubleshooting these types of issues it is always best to use trial and error (i.e shortening the chain of communication and adding your links back in).
I also think it is important to note that we have seen numerous issues with the Apple products in the past. Brian wrote up a very in depth post about where users can potentially get into “trouble” with certain configurations and mentioned the following:
“Poor quality or underpowered routers. The Apple AirPort Extreme is extremely bad (they seem to be exiting that business and paying little attention to the issues…I wouldn’t want one in my life). Some “cable company specials” are not great either. This technology moves over time–a first-generation 802.11n router will underperform compared to something more current, simply because the newer ones have more CPU/RAM. If at all possible, make sure your router does 802.11ac. Even if your endpoints are n-only, the bandwidth hungry phones/tablets/laptops are more likely to have ac support, which will get them out of the way a little bit.”
Let me know how it goes!
-Eric