I am impressed with the knowledge base in this thread, and the effort to troubleshoot these issues. I am having the same problems and get quite frustrated when my devices lose sync. I am using a Node 2 and a Pulse p300 (Pulse 1). When I have them grouped (when using Roon) either in Bluesound or in Roon I will inevitably hear a a slowing down or speeding up of the music coming from the Node 2 system. This is the point where the two devices lose sync. I have not been able to get the devices to resync without rebooting the entire system. On the other hand, I have had no problem with the sync issues if I leave Roon closed and operate the entire system/group via Bluos. I really like Roon and I am astounded that I can use my Ipad as an endpoint and I like the fact that I can group in Bluos. However, the goal was to use Roon and my Bluesound setup as a comprehensive system. One of the contributors made an excellent point in that Bluesound made an investment to participate in this venture. Since they made this commitment I would say that they have a duty to fulfill it for all of the customers that bought into their system. The same is true for Roon. Right now, I am considering shedding one of these systems. Iād rather not have to go that route.
I think I have a breakthrough regarding the syncing issue between my BluOs devices when grouped within Roon.
Today Iāve placed a simple Netgear ethernet switch between my modem/router and my home network (Node2 + MacMini with Roon Core, both hard-wired via Airport Extreme and Pulse Mini also hard-wired via seperate port).
Before, the network traffic was routed through my Technicolor modem/router, now itās handled by the Netgear switch (GS-105).
Iām playing two rooms in sync for 2+ hours now, which I definitely wasnāt able to do before. The only way I can get them out of sync is by playing a 24/192 fileā¦ 24/96 seems to be working fine thoughā¦
Very promising I must sayā¦ 
Glad to hear thatās working for you 
Sadly not a solution for me as my Node 2 already goes via a GS105. Even with 2 devices connected to the same switch the problem persists for me, though my normal configuration is with some on wifi and the Node cabled.
I had both devices drifting once with a non-hires file in 2,5 hours, so it definitely has become more stable, not to say itās 100% fixed.
Still would like to see that RAAT update for BluOsā¦
I cheered too soon. First song I played this morning directly got out of syncā¦ 
Dāohā¦frustrating 
I have a NAD T777v3 AV receiver with BluOS (living room) and a Bluesound Pulse Soundbar (kitchen) both connected via WiFi only and they have played perfectly in sync from the first day. They are in use since March 1st 2018.
sorry to hear. Definitely worth the try and thank you for letting us know 
Thanks, yes I know itās possible, just not working for me. Off-topic: how are you liking that Pulse Soundbar? I also want to buy oneā¦
I like the Pulse Soundbar. No need to add the subwoofer. SQ is good. I use it for music obviously but also for the audio from the TV set in the living room. The audio signal comes from the TOSlink of a Node 2 and is perfectly in sync with the speakers that are connected to the NAD.
Just curious, but why would you need to get the audio from a Node2 via Toslink? You can sync it directly to the Soundbar canāt you?
The NAD BluOS module does not have an input where I can feed the audio from the TV set.
Ah I seeā¦ 
Ok, short update about this issue: Iāve submitted a support request at BlueSound and eventually they could reproduce the syncing issue in their lab. Now just hoping it will be resolved soonā¦
Finally!!! Itās good to hear of some evidence that itās not being completely ignoredā¦thanks @dibb 
Yeah, being able to actually reproduce an issue is always the first step in the process of resolving it. Now we can only hope that BlueSound believes itās important enough to actually solve itā¦
Hi,
new BluOS - firmware (2.16.14) is here ā¦
Little disappointed:
- still no Airplay support
- still āoldā RAAT SDK Version at 1.1.15
Letās hope itās just an interim update (which it seems), otherwise given their general release frequency, we can expect quite a wait before being able to raise our hopes againā¦
Some hopeful news coming from BlueSound! They finally say the sync bug will be solvedā¦
BluOs 2.18 has been released with roon MQA support.
RAAT version is now at 1.1.28