Problems to start Radiostream with Bluesound Node2i

Hi, I have dicoveres problems to start several streams with Roon and Bluesound. If I start a properly working stream and the connection process takes long, the Roon App will notice to have Stream problems but the stream will start for 1sec then stop again. Other devices with cable ethernet connected will start without problems.
Just to know I have good reception and a proper bandwith. Its just roon will not wait long enough!?
Please fix this problem. I did serveral tests, including restarting every device and so on! The problem persists!

Thanks for help!

Hello @flan, this sounds like a problem with your setup or connection rather than live radio per se, so I’m moving this to #support who will help you out.
To get started, can you please describe your setup using this link as a guide.

Hi @flan,

In order for Roon’s @support team to better assist you, please provide a brief description of your current setup using this link as a guide.

Make sure to describe your network configuration/topology, including any networking hardware currently in use, so they can have a clear understanding of how your devices are communicating.

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Hi Support Team

The Issue is a new one, earlier this problem was not ocurring, so this is the reason why I do not beleave its a setup problem, but never say no…

I have the following setup:
-Core is running on a Synology DS918+ with all the specified requirememts.
-Network is a Unifi USG with Unifi Switch PoE and UAP LR
-5 Bluesound devices, 2 cable wired, 3 with wifi
-Listen to music from Synology and from Qobuz
-Radio stations from the Roon Library

Some of the stations are running without problem, some have starting problems, but nothing to recognize a similarity or a rule. If a station is already running a new one will start properly at most time…
Its only one the Bluesound Pulse flex 2i (not the node, I mentioned in title). Node and Pulse2 are running ok.

My internet connection is one gig down and 100mb up.

Hi @flan,

Can you provide an example of a radio station that has this issue and it’s streaming link?
Does this issue occur for local or Qobuz content or is the issue just with radio stations?
Have you tried rebooting the Flex 2i yet? If not, I would try rebooting this device.

Hi @noris
Its for example this Station: SRF 3 with:

Restarted several time, did not help!

Hi @flan,

I tried this radio station on my end and I’m not seeing any issues.

Do you have any issues playing back streaming (TIDAL/Qobuz) content?

What is your internet speed according to or

with WiFi connected.
Cable will have 950MB down, 100MB up

Had some issues with Qobuz with playing back, only on this device!

Hi @flan,

Thanks for confirming the network speed and that this issue occurs with Qobuz as well. I tried playing the station on my end overnight and I’m not seeing any issues with it, so I believe this issue is device-specific and impacts all kinds of content to the Node 2i zone.

How is the Node 2i connected to the network? Is it one of your WiFi devices or is it Ethernet connected? If you are on WiFi, can you try temporarily connecting your Node 2i via Ethernet as a test?

I have done some more tests and trials.
Wired, the problem did not occur.
The problem only occurs with this device when it is connected wirelessly, regardless of the signal strength. There is no problem with two other BluOS devices in the same WiFi network. Also the speaker has no problem when I start the radio stations with the BluOS app.
in Roon, if I try several times, it suddenly works after the 2nd, 3rd, 4th try.
Other stations have the same problem but not always. If for example a stream is already running it is possible that a new stream starts without problems.
Playing content from Synology Server starts and streams without problems.

The device with the problem is:
Bluesound Flex 2i
Other devices wirelessly, without problems:
Bluesound Pulse 2
Bluesound Flex (first Series)

All devices connect with RAAT Protocol (not AirPlay).

See issue here:!Anb9rQZwf9OPgu4Vqy1J0PzVFi6boA?e=uSvhQj

Hello @flan,

Thanks for sharing that video. I have enabled diagnostics mode for your account and what this action does is automatically upload a log-set to our servers for analysis. I will ask the technical team to look over this report and once that’s been done we will reach out once more.

Hi @noris

Thanks for that, few minutes ago I gave a try to serveral Radio Stations. 90% of the tries gave me the error. Some tries went ok. Hope this helps out. I will try tomorrow again. We now go to bed… :wink:

Best regards!

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Hello @flan,

Looking at your diagnostic logs, it appears that the Flex 2i is becomes unresponsive when the Radio stream is started to the device.

03/27 12:40:36 Info: 
--[ SignalPath ]---------------------------------------------
SignalPath Quality = LowQuality
    Source Format=Mp3 44100/24/2  Quality=LowQuality
    UpgradeBitDepth FromBitsPerSample=24 ToBitsPerSample=64 Quality=Lossless
    Truncate FromBitsPerSample=64 ToBitsPerSample=24 Quality=Lossless
    Raat Device=Bluesound PULSE FLEX 2i
    Amplifier Method=bluos_digital Quality=Enhanced
    Output OutputType=Local_Speakers Quality=Lossless SubType= Model=
03/27 12:40:37 Warn: [raat/tcpaudiosource] send failed: The socket has been shut down
03/27 12:40:37 Warn: [raat/tcpaudiosource] disconnecting + retrying
03/27 12:40:37 Debug: [raat/tcpaudiosource] disconnecting
03/27 12:40:44 Info: [stats] 3637mb Virtual, 1284mb Physical, 543mb Managed, 0 Handles, 84 Threads
03/27 12:40:44 Trace: [FLEXSpeaker] [LowQuality, 24/44 MP3 => 24/44] [100% buf] [PLAYING @ 0:00] USA FOR AFRICA - WE ARE THE WORLD
03/27 12:40:44 Trace: [roonapi] [apiclient] CONTINUE Changed {"zones_changed":[{"zone_id":"1601e83eae2d407000b3af74f5189b18a0a3","display_name":"FLEXSpeaker","outputs":[{"output_id":"1701e83eae2d407000b3af74f5189b18a0a3","zone_id":"1601e83eae2d407000b3af74f5189b18a0a3","can_group_with_output_ids":["1701b52d6f01e681d6e88fa2d87f2d7c29cf","17017fc6b8224ddfc3708500358059911a2f","1701e83eae2d407000b3af74f5189b18a0a3","1701823b6daac674d5586b3fa7791243a6da","1701d41a5ae26ba3f4d46d0d90f19eb2d62a"],"display_name":"FLEXSpeaker","volume":{"type":"number","min":0,"max":100,"value":21,"step":1,"is_muted":false,"hard_limit_min":0,"hard_limit_max":100,"soft_limit":100},"source_controls":[{"control_key":"1","display_name":"Bluesound PULSE FLEX 2i","supports_standby":false,"status":"indeterminate"}]}],"state":"playing","is_next_allowed":false,"is_previous_allowed":false,"is_pause_allowed":true,"is_play_allowed":false,"is_seek_allowed":false,"queue_items_remaining":1,"queue_time_remaining":192,"settings":{"loop":"disabled","shuffle":false,"auto_radio":true},"now_playing":{"seek_position":null,"one_line":{"line1":"USA FOR AFRICA - WE ARE THE WORLD"},"two_line":{"line1":"SRF 3","line2":"USA FOR AFRICA - WE ARE THE WORLD"},"three_line":{"line1":"SRF 3","line2":"USA FOR AFRICA - WE ARE THE WORLD","line3":""},"image_key":"afd611ddf80b5dce68aa13b8e9e99aff8bf23d351d0918d67f032e52c91c6dc24882ed6107bcb78f714d78cf03afae007c19d2b22be531e4ef602d52bd934ed8d14f0fa01777ed6d5769af980172f2d595298723dcea64407052e65288ae8f42dfa7ac27b3e2d88eec2d993c5c7ed404"}}]}
03/27 12:40:46 Warn: [FLEXSpeaker] [zoneplayer/raat] Endpoint failed to become ready in 10s. Proceeding in state Buffering
03/27 12:40:46 Trace: [FLEXSpeaker] [zoneplayer/raat] Endpoint Bluesound PULSE FLEX 2i State Changed: Buffering => Ready
03/27 12:40:46 Trace: [FLEXSpeaker] [zoneplayer/raat] wait for ready in 10000ms
03/27 12:40:46 Trace: [FLEXSpeaker] [zoneplayer/raat] Adjusting playback start offset from 50ms to 220ms
03/27 12:40:46 Trace: [FLEXSpeaker] [zoneplayer/raat] Doing 'ASAP' Start since we are just playing to one device
03/27 12:40:46 Trace: [Bluesound PULSE FLEX 2i @] [raatclient] SENT [822]{"request":"start","min_offset":220000000,"stream_sample":0}
03/27 12:40:46 Trace: [FLEXSpeaker] [zoneplayer/raat] Endpoint Bluesound PULSE FLEX 2i State Changed: Ready => Playing
03/27 12:40:46 Trace: [roonapi] [apiclient] CONTINUE Changed {"zones_seek_changed":[{"zone_id":"1601e83eae2d407000b3af74f5189b18a0a3","queue_time_remaining":192,"seek_position":0}]}
03/27 12:40:46 Debug: [raat/tcpaudiosource] connecting to
03/27 12:40:47 Debug: [raat/tcpaudiosource] connected
03/27 12:40:47 Trace: [Bluesound PULSE FLEX 2i @] [raatclient] GOT [820] {"status":"Playing"}
03/27 12:40:47 Trace: [Bluesound PULSE FLEX 2i @] [raatclient] GOT [822] {"status":"Success","time":10896436494}
03/27 12:40:47 Trace: [Bluesound PULSE FLEX 2i @] [raatclient] GOT [820] {"status":"Dropout","samples":38478}
03/27 12:40:47 Warn: [raat/tcpaudiosource] send failed: Connection reset by peer
03/27 12:40:47 Warn: [raat/tcpaudiosource] disconnecting + retrying
03/27 12:40:47 Debug: [raat/tcpaudiosource] disconnecting
03/27 12:40:47 Debug: [raat/tcpaudiosource] connecting to
03/27 12:40:47 Debug: [raat/tcpaudiosource] connected
03/27 12:40:47 Trace: [Bluesound PULSE FLEX 2i @] [raatclient] GOT [820] {"status":"Dropout","samples":37752}

Seeing as we do not have any reports of this behavior occurring on other Roon Ready devices, it appears that this issue is localized to the Flex 2i. We spent a few minutes playing Radio streams to our in-house Pulse Flex 2i using 5GHz WiFi and did not run into any issues.

Looking further at your diagnostics, it appears that your Roon Core does not meet our minimum requirements for Roon. The Synology DS918+ has an Intel Celeron J3455 which is 50% slower in single core performance compared to the seven year old CPU defined in our minimum requirements. It is not possible for us to determine if the performance of your core is causing the behavior with the Flex 2i.

As for next steps, I would try disabling Parametric EQ to see if you notice any difference in behavior. I would also try running Roon on your PC instead of the NAS to see if that makes a difference. You can do so with the following instructions:

  • Open Roon on the other PC you wish to try as the Core
  • Roon Settings -> General
  • Disconnect
  • On the “Choose your Core” screen, press “Use this PC”
  • If asked to Unauthorize, you can go ahead and do so. You are limited to one active Roon Core at a time but you are free to switch between them as often as you’d like.
  • Verify if the same behavior occurs on the different PC


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Hi @john

Thanks for getting into this! This seems to be the problem, the core performance! I made some first tests with switching off DSP and using an other core. So here are the results of testing.

  1. Switching off DSP for Flex2i: It responses quickly and start the Radio with 100% success.
  2. Use PC Core and DSP: It responses even more quick and start without problem. 100% success!

So seems to be the problem with core, but strange because other BluOS device use DSP as well and got no problem with it…

So the clue will be to use more performant core! But can I copy the hole database incl. Radio Favourites to the new Core? I have stored a lot of custom premium channels into favourites…

Thanks for your help and response.

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Hi @flan,

Glad too hear that you’ve been able to localize the issue to the Core performance!

Yes, if you create a Backup of your library and restore it to the new desired Core, all your playlists, favorites, metadata edits, ect. should transfer over.

You can also look over our Migration Knowledge Base Article for more in-depth instructions on how to transfer the Core over.

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