Hi @Tamir_Dotan,
Our apologies that this thread inadvertently timed out without a conclusion.
Diagnostics from the last few days show that the Pulse 2i listed under the Zone name [ Zone: FLEX 2i- Rooms ] continues to be the problematic endpoint. That particular IP address is logging packet loss when Roon attempts to stream high-resolution audio via RAAT, which is uncompressed.
You mentioned this endpoint is hardwired. Packet loss like this can still occur even in an ethernet-only setup if there is instability around port assignment or the network is congested; since you have a managed network switch in this setup, these are possibilities here.
From here, please try the following:
1. Disable Sample Rate Conversion first. Go to each zone’s device setup and check the DSP/Muse settings. Your logs show Roon upsampling all the audio to 24/192 before sending. When zones are grouped, that multiplies the data load on your network exponentially, which might be causing sufficient congestion to break the Bluesound Pulse’s buffer. Set Sample Rate Conversion to “Disabled” for all zones, then group them and test. When you create the Group, add the Bluesound Pulse 2i units last.
2. Test the whole group with the Silent Angel switch bypassed. I know the Flex2i isn’t connected to the switch, but the units connected via the switch are still behaving differently here than the unit connected directly to the router. Temporarily connect the devices currently on the Bonn N8 directly to your router (or to a basic spare switch if the router doesn’t have enough ports), group the zones, and play. Let’s try to bypass the managed switch completely.
This should suffice for us to deduce the problem here. Thank you!

