Dropouts with Devialet-Phantom 2's [Resolved - Network changes]

Roon Core Machine

Intel NUC i5-10210U, 16 GB DDR4, 512GB M.2 Drive

Networking Gear & Setup Details

Unifi Network with 3x Unifi AP nanoHD with latest firmware.
(Rock solid performing >200 Mbit wireless performance in all my apartment, as well as low latency)
My network reports 99% quality in Unifi controller. All devices are within ~5 meters of an AP and has very strong signal.

Connected Audio Devices

  • 2x Devialet Phantom 1 (Gold)
  • 2x Devialet Phantom 1 (Silver)
  • 3x Raspberry Pi’ 4s (Hifiberry Amp)
  • 1x Bluesound Flex 2i
  • 2x Devialet Phantom 2 (encounter dropouts continously, when in Stereo mode, even when WIRED)

I have done tons of experimenting and I can confirm that the Phansom 2’s seems to suffer dropouts even when connected using Ethernet-cable.

The log below is with only playing the Phansom 2’s (in stereo mode) using ethernet connection:

--[ SignalPath ]---------------------------------------------
SignalPath Quality = Enhanced
Elements:
    Source Format=Flac 44100/16/2  Quality=Lossless MQA 44100
    MQA Subtype=authentication LightState=valid OriginalSampleRate=44100 OutputSampleRate= OutputBitsPerSample=
    MQA Subtype=roon_core_decoder LightState= OriginalSampleRate= OutputSampleRate=88200 OutputBitsPerSample=24
    Raat Device=Devialet Phantom II Opéra de Paris Stereo
    SampleRateConversion FromSampleRate=88200 ToSampleRate=48000 Algorithm=Other Quality=None
    DSP Subtype=devialet_sam_phantom PresetKey=Phantom II Opéra de Paris TruePeak= Value= StringValue= Model=Phantom II Opéra de Paris Stereo FromSampleRate= ToSampleRate= Quality=Enhanced PresetDisplayName= ModeDisplayName=
    Amplifier Method=devialet_adh Quality=Enhanced
    Output OutputType=Local_Speakers Quality=Lossless SubType= Model=
------------------------------------------------------------
08/09 15:41:42 Trace: [Office] [Enhanced 32.4x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 0:04/3:28] Ghost Town - Adam Lambert
08/09 15:41:47 Info: [stats] 27549mb Virtual, 511mb Physical, 69mb Managed, 294 Handles, 113 Threads
08/09 15:41:47 Trace: [Office] [Enhanced 27.0x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 0:09/3:28] Ghost Town - Adam Lambert
08/09 15:41:52 Trace: [Office] [Enhanced 25.3x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 0:14/3:28] Ghost Town - Adam Lambert
08/09 15:41:57 Trace: [Office] [Enhanced 24.6x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 0:19/3:28] Ghost Town - Adam Lambert
08/09 15:42:02 Info: [stats] 27501mb Virtual, 515mb Physical, 61mb Managed, 294 Handles, 103 Threads
08/09 15:42:02 Trace: [Office] [Enhanced 23.8x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 0:24/3:28] Ghost Town - Adam Lambert
08/09 15:42:04 Warn: [Office] [zoneplayer/raat] long rtt sync Devialet Phantom II Opéra de Paris Stereo: realtime=95664794464 rtt=41000us offset=29441794us delta=38173us drift=40039us in 26.4755s (1512.335ppm, 5444.406ms/hr)
08/09 15:42:07 Trace: [Office] [Enhanced 23.3x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 0:29/3:28] Ghost Town - Adam Lambert
08/09 15:42:08 Trace: [Office] [zoneplayer/raat] sync Devialet Phantom II Opéra de Paris Stereo: realtime=99337336080 rtt=500us offset=29401336us delta=-10058us drift=-418us in 30.345s (-13.793ppm, -49.656ms/hr)
08/09 15:42:12 Trace: [Office] [Enhanced 23.1x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 0:34/3:28] Ghost Town - Adam Lambert
08/09 15:42:17 Info: [stats] 27493mb Virtual, 521mb Physical, 96mb Managed, 294 Handles, 102 Threads
08/09 15:42:17 Trace: [Office] [Enhanced 22.9x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 0:39/3:28] Ghost Town - Adam Lambert
08/09 15:42:22 Trace: [Office] [Enhanced 22.7x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 0:44/3:28] Ghost Town - Adam Lambert
08/09 15:42:24 Warn: [Office] [zoneplayer/raat] long rtt sync Devialet Phantom II Opéra de Paris Stereo: realtime=115657009664 rtt=33000us offset=29434009us delta=27179us drift=32255us in 46.567s (692.658ppm, 2493.570ms/hr)
08/09 15:42:27 Trace: [Office] [Enhanced 22.6x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 0:49/3:28] Ghost Town - Adam Lambert
08/09 15:42:32 Info: [stats] 27485mb Virtual, 518mb Physical, 92mb Managed, 295 Handles, 101 Threads
08/09 15:42:32 Trace: [Office] [Enhanced 22.5x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 0:54/3:28] Ghost Town - Adam Lambert
08/09 15:42:37 Trace: [Office] [Enhanced 22.5x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 0:59/3:28] Ghost Town - Adam Lambert
08/09 15:42:38 Trace: [Office] [zoneplayer/raat] sync Devialet Phantom II Opéra de Paris Stereo: realtime=129692314352 rtt=9000us offset=29410314us delta=6841us drift=8559us in 60.6845s (141.053ppm, 507.790ms/hr)
08/09 15:42:42 Trace: [Office] [Enhanced 22.4x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 1:04/3:28] Ghost Town - Adam Lambert
08/09 15:42:47 Warn: [Office] [zoneplayer/raat] long rtt sync Devialet Phantom II Opéra de Paris Stereo: realtime=138146311504 rtt=123500us offset=29524311us delta=114285us drift=122556us in 68.8855s (1779.139ppm, 6404.900ms/hr)
08/09 15:42:47 Info: [stats] 27485mb Virtual, 518mb Physical, 83mb Managed, 295 Handles, 104 Threads
08/09 15:42:47 Trace: [Office] [Enhanced 22.3x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 1:09/3:28] Ghost Town - Adam Lambert
08/09 15:42:52 Trace: [Office] [Enhanced 22.4x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 1:14/3:28] Ghost Town - Adam Lambert
08/09 15:42:58 Trace: [Office] [Enhanced 22.4x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 1:19/3:28] Ghost Town - Adam Lambert
08/09 15:43:02 Info: [stats] 27485mb Virtual, 518mb Physical, 74mb Managed, 295 Handles, 104 Threads
08/09 15:43:03 Trace: [Office] [Enhanced 22.3x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 1:24/3:28] Ghost Town - Adam Lambert
08/09 15:43:08 Trace: [Office] [Enhanced 22.2x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 1:29/3:28] Ghost Town - Adam Lambert
08/09 15:43:09 Trace: [Office] [zoneplayer/raat] sync Devialet Phantom II Opéra de Paris Stereo: realtime=159980476768 rtt=2000us offset=29403476us delta=-260us drift=1722us in 90.9815s (18.928ppm, 68.142ms/hr)
08/09 15:43:13 Trace: [Office] [Enhanced 22.2x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 1:35/3:28] Ghost Town - Adam Lambert
08/09 15:43:17 Info: [stats] 27485mb Virtual, 515mb Physical, 73mb Managed, 295 Handles, 101 Threads
08/09 15:43:18 Trace: [Office] [Enhanced 22.2x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 1:40/3:28] Ghost Town - Adam Lambert
08/09 15:43:23 Trace: [Office] [Enhanced 22.1x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 1:45/3:28] Ghost Town - Adam Lambert
08/09 15:43:29 Trace: [Office] [Enhanced 22.1x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 1:50/3:28] Ghost Town - Adam Lambert
08/09 15:43:32 Warn: [Office] [zoneplayer/raat] long rtt sync Devialet Phantom II Opéra de Paris Stereo: realtime=183156876272 rtt=237500us offset=29638876us delta=236475us drift=237121us in 113.551s (2088.239ppm, 7517.661ms/hr)
08/09 15:43:32 Info: [stats] 27461mb Virtual, 516mb Physical, 72mb Managed, 295 Handles, 102 Threads
08/09 15:43:33 Warn: [Office] [zoneplayer/raat] long rtt sync Devialet Phantom II Opéra de Paris Stereo: realtime=184352521392 rtt=229500us offset=29322521us delta=-316354us drift=-79233us in 115.212s (-687.717ppm, -2475.781ms/hr)
08/09 15:43:34 Trace: [Office] [Enhanced 22.1x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 1:55/3:28] Ghost Town - Adam Lambert
08/09 15:43:39 Trace: [Office] [zoneplayer/raat] sync Devialet Phantom II Opéra de Paris Stereo: realtime=190441230192 rtt=17000us offset=29418230us delta=13308us drift=16475us in 121.3535s (135.765ppm, 488.754ms/hr)
08/09 15:43:40 Trace: [Office] [Enhanced 22.1x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 2:01/3:28] Ghost Town - Adam Lambert
08/09 15:43:44 Warn: [Office] [zoneplayer/raat] long rtt sync Devialet Phantom II Opéra de Paris Stereo: realtime=195129080512 rtt=436500us offset=29359080us delta=-59149us drift=-42674us in 125.745s (-339.370ppm, -1221.733ms/hr)
08/09 15:43:45 Trace: [Office] [Enhanced 22.1x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 2:07/3:28] Ghost Town - Adam Lambert
08/09 15:43:47 Info: [stats] 27461mb Virtual, 515mb Physical, 65mb Managed, 295 Handles, 102 Threads
08/09 15:43:50 Trace: [Office] [Enhanced 22.1x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 2:12/3:28] Ghost Town - Adam Lambert
08/09 15:43:54 Warn: [Office] [zoneplayer/raat] long rtt sync Devialet Phantom II Opéra de Paris Stereo: realtime=205520591040 rtt=337000us offset=29738591us delta=312661us drift=336836us in 135.787s (2480.623ppm, 8930.244ms/hr)
08/09 15:43:55 Trace: [Office] [Enhanced 22.1x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 2:17/3:28] Ghost Town - Adam Lambert
08/09 15:43:58 Warn: [Office] [zoneplayer/raat] long rtt sync Devialet Phantom II Opéra de Paris Stereo: realtime=209334920240 rtt=507000us offset=29622920us delta=-115670us drift=221165us in 139.6155s (1584.105ppm, 5702.778ms/hr)
08/09 15:43:59 Warn: [Office] [zoneplayer/raat] long rtt sync Devialet Phantom II Opéra de Paris Stereo: realtime=210618321024 rtt=136500us offset=29485321us delta=-137599us drift=83566us in 141.407s (590.964ppm, 2127.469ms/hr)
08/09 15:44:00 Trace: [Office] [Enhanced 22.1x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 2:22/3:28] Ghost Town - Adam Lambert
08/09 15:44:02 Info: [stats] 27461mb Virtual, 514mb Physical, 65mb Managed, 295 Handles, 101 Threads
08/09 15:44:06 Trace: [Office] [Enhanced 22.1x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 2:27/3:28] Ghost Town - Adam Lambert
08/09 15:44:11 Trace: [Office] [Enhanced 22.1x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 2:32/3:28] Ghost Town - Adam Lambert
08/09 15:44:16 Trace: [Office] [Enhanced 22.1x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 2:37/3:28] Ghost Town - Adam Lambert
08/09 15:44:17 Info: [stats] 27605mb Virtual, 518mb Physical, 68mb Managed, 293 Handles, 120 Threads
08/09 15:44:20 Trace: [Devialet Phantom II Opéra de Paris Stereo @ 192.168.1.88:38517] [raatclient] GOT [59] {"status":"Dropout","samples":156040}
08/09 15:44:20 Trace: [Devialet Phantom II Opéra de Paris Stereo @ 192.168.1.88:38517] [raatclient] GOT [59] {"status":"Dropout","samples":35280}
08/09 15:44:21 Trace: [Office] [Enhanced 22.1x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 2:42/3:28] Ghost Town - Adam Lambert
08/09 15:44:22 Warn: [Office] [zoneplayer/raat] long rtt sync Devialet Phantom II Opéra de Paris Stereo: realtime=232978004240 rtt=198500us offset=29410004us delta=-75316us drift=8249us in 163.781s (50.370ppm, 181.331ms/hr)
08/09 15:44:23 Trace: [Office] [zoneplayer/raat] sync Devialet Phantom II Opéra de Paris Stereo: realtime=234678588784 rtt=2000us offset=29403588us delta=-6415us drift=1834us in 165.6725s (11.071ppm, 39.855ms/hr)
08/09 15:44:26 Trace: [Office] [Enhanced 22.0x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 2:47/3:28] Ghost Town - Adam Lambert
08/09 15:44:26 Warn: [Office] [zoneplayer/raat] long rtt sync Devialet Phantom II Opéra de Paris Stereo: realtime=237760530128 rtt=219000us offset=29620530us delta=216941us drift=218775us in 168.1115s (1301.371ppm, 4684.937ms/hr)
08/09 15:44:31 Trace: [Office] [Enhanced 22.0x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 2:52/3:28] Ghost Town - Adam Lambert
08/09 15:44:32 Info: [stats] 27605mb Virtual, 513mb Physical, 66mb Managed, 293 Handles, 120 Threads
08/09 15:44:36 Trace: [Office] [Enhanced 22.0x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 2:58/3:28] Ghost Town - Adam Lambert
08/09 15:44:41 Trace: [Office] [Enhanced 22.0x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 3:03/3:28] Ghost Town - Adam Lambert
08/09 15:44:46 Trace: [Office] [Enhanced 22.0x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [100% buf] [PLAYING @ 3:08/3:28] Ghost Town - Adam Lambert
08/09 15:44:47 Info: [stats] 27501mb Virtual, 517mb Physical, 58mb Managed, 293 Handles, 103 Threads
08/09 15:44:51 Trace: [prebuffer] short read: 0 / 8820 fill=437928
08/09 15:44:51 Trace: [Office] [Enhanced 22.0x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [99% buf] [PLAYING @ 3:13/3:28] Ghost Town - Adam Lambert
08/09 15:44:54 Trace: [Office] [zoneplayer/raat] sync Devialet Phantom II Opéra de Paris Stereo: realtime=265029702432 rtt=1500us offset=29402702us delta=-278us drift=947us in 196.037s (4.835ppm, 17.405ms/hr)
08/09 15:44:56 Trace: [Office] [Enhanced 21.9x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [51% buf] [PLAYING @ 3:18/3:28] Ghost Town - Adam Lambert
08/09 15:45:01 Trace: [Office] [Enhanced 21.9x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [3% buf] [PLAYING @ 3:23/3:28] Ghost Town - Adam Lambert
08/09 15:45:02 Info: [stats] 27477mb Virtual, 518mb Physical, 59mb Managed, 293 Handles, 102 Threads
08/09 15:45:06 Trace: [Office] [Enhanced 21.9x, 16/44 MQA TIDAL FLAC => 24/88 MQA] [3% buf] [PLAYING @ 3:27/3:28] Ghost Town - Adam Lambert
08/09 15:45:06 Trace: [Office] [zoneplayer/raat] Endpoint Devialet Phantom II Opéra de Paris Stereo State Changed: Playing => Prepared
08/09 15:45:06 Trace: [Devialet Phantom II Opéra de Paris Stereo @ 192.168.1.88:38517] [raatclient] SENT [269]{"request":"end_stream"}
08/09 15:45:06 Info: [library] recorded play for profile 608a6f2c-0340-4849-b918-46455c6c5177: mediaid=168:0:44775984 metadataid= contentid=168:0:44775984 libraryid= isfromswim=False
08/09 15:45:06 Info: 

Hello @Ettrig,

Thanks for getting in touch and for sharing not only the issue you’re experiencing, but also logs and all the troubleshooting steps you’ve already taken.

I’ve looped in our technical team so they can take a closer look at all the information you’ve added in your post and help :nerd_face:

Thanks @beka

I have done some more investigation on my own, and closely monitored my logs.

From what I can see, at points I get these
“Warn: [Office] [zoneplayer/raat] long rtt sync”

from various devices, especially it seems from those that are in the “weakest” signal from WIFI.
What I found out interesting is, that even the “Raspberry Pi’s” that I have ruled out as “100% working” (because they never seem to “drop out” and they keep playing continuously no matter) seems to report these Warnings at times? Perhaps they are introducing the delays into the system which cause other endpoints to fail their sync? (Can that happen?)

I have tried to replace the “weakest” wifi-spots with powerline ethernet adapters and that seems to have improved the reliability.

Better Diagnostics and Tools?
I wonder if there’s any chance the tech team could implement better diagnostics within the Roon Client or the ROCK interface? (For example, you could have a “Endpoint Health” screen where you could easily access summaries for example if an endpoint introduces warnings or issues?

It seems to me that the Client should also be able to report to user that some devices on the network are introducing issues quite detailed?
(I understand it’s convenient to just advice “use ethernet, don’t use wifi” but since a ton of these “Roon Ready” devices are WIFI-enabled, as an end user you expect it to work even when using them in WIFI mode…)

For now I’ve resolved to ordering more Powerline Ethernet-adapters and I will connect them tonight and see if that stops all the problems once and for all…

Number of devices
I wonder if the amount of endpoints I use are too many? I have ~10 endpoints in my system, and getting it playing flawlessly has been a big challenge. Maybe it’s just that that’s stretching the limit of a Roon system in general? Are there any guidelines or recommendations for when a system can start becoming unstable because of trying to sync too many devices?

I can also add though that I still see this with the Phantom 2’s (connected to Ethernet directly to switch)

08/11 06:12:33 Warn: [Office + Kitchen + Living Room + Master Bathroom] [zoneplayer/raat] long rtt sync Devialet Phantom II Opéra de Paris Stereo: realtime=138724450629184 rtt=31500us offset=138685212629us delta=19138us drift=24023us in 22.461s (1069.549ppm, 3850.376ms/hr)

(doing some playback this morning, had a small dropout as well some seconds before I checked the log) I assume that if a Phantom 2 is connected to Ethernet, these warnings should not occur really…?

Keeping playing this morning, the Phantom 2’s (connected to Ethernet directly) keep getting dropouts.

They are setup as a “stereo pair” in the Devialet app. It’s hard for me to tell if it’s the “Devialet Stereo-sync” that fails or if it’s a real Roon dropout. My understanding is that when in “Stereo-mode” one Devialet speaker works as “master” and relays information to its paired up speaker?

Seeing the Phantom 2 being “Roon Ready” I don’t think this should happen though :slight_smile: (even if it’s on Devialets end of implementation)

In the log, repeated I see this though:

08/11 06:16:48 Warn: [Office + Kitchen + Living Room + Master Bathroom] [zoneplayer/raat] long rtt sync Devialet Phantom II Opéra de Paris Stereo: realtime=138979306707184 rtt=44000us offset=138685232707us delta=43551us drift=44101us in 277.076s (159.166ppm, 572.998ms/hr)
08/11 06:16:48 Trace: [Office + Kitchen + Living Room + Master Bathroom] [zoneplayer/raat] sync Devialet Phantom II Opéra de Paris Stereo -> Devialet Phantom I Opéra de Paris Stereo result: Success
08/11 06:16:49 Trace: [Office] [LowQuality, 24/48 MP3 => 24/48] [100% buf] [PLAYING @ 4:38] P3
08/11 06:16:49 Trace: [Kitchen] [LowQuality, 24/48 MP3 => 24/48] [100% buf] [PLAYING @ 4:38] P3
08/11 06:16:49 Trace: [Living Room] [LowQuality, 24/48 MP3 => 24/48] [100% buf] [PLAYING @ 4:38] P3
08/11 06:16:49 Trace: [Master Bathroom] [LowQuality, 24/48 MP3 => 24/48] [100% buf] [PLAYING @ 4:38] P3
08/11 06:16:49 Trace: [Office + Kitchen + Living Room + Master Bathroom] [zoneplayer/raat] sync snd_rpi_hifiberry_dacplus -> Devialet Phantom I Opéra de Paris Stereo result: Success
08/11 06:16:49 Trace: [Office + Kitchen + Living Room + Master Bathroom] [zoneplayer/raat] sync Devialet Phantom I Light Chrome Stereo -> Devialet Phantom I Opéra de Paris Stereo result: Success
08/11 06:16:49 Trace: [Office + Kitchen + Living Room + Master Bathroom] [zoneplayer/raat] sync Devialet Phantom II Opéra de Paris Stereo -> Devialet Phantom I Opéra de Paris Stereo result: Success
08/11 06:16:51 Trace: [Office + Kitchen + Living Room + Master Bathroom] [zoneplayer/raat] sync Devialet Phantom I Light Chrome Stereo -> Devialet Phantom I Opéra de Paris Stereo result: Success
08/11 06:16:51 Trace: [Office + Kitchen + Living Room + Master Bathroom] [zoneplayer/raat] sync snd_rpi_hifiberry_dacplus -> Devialet Phantom I Opéra de Paris Stereo result: Success
08/11 06:16:51 Warn: [Office + Kitchen + Living Room + Master Bathroom] [zoneplayer/raat] long rtt sync Devialet Phantom II Opéra de Paris Stereo: realtime=138983135475424 rtt=32500us offset=138685220475us delta=30854us drift=31869us in 281.042s (113.397ppm, 408.230ms/hr)
08/11 06:16:52 Trace: [Office + Kitchen + Living Room + Master Bathroom] [zoneplayer/raat] sync Devialet Phantom II Opéra de Paris Stereo -> Devialet Phantom I Opéra de Paris Stereo result: Success
08/11 06:16:53 Trace: [Office + Kitchen + Living Room + Master Bathroom] [zoneplayer/raat] sync snd_rpi_hifiberry_dacplus -> Devialet Phantom I Opéra de Paris Stereo result: Success
08/11 06:16:53 Trace: [Office + Kitchen + Living Room + Master Bathroom] [zoneplayer/raat] sync Devialet Phantom I Light Chrome Stereo -> Devialet Phantom I Opéra de Paris Stereo result: Success
08/11 06:16:53 Warn: [Office + Kitchen + Living Room + Master Bathroom] [zoneplayer/raat] long rtt sync Devialet Phantom II Opéra de Paris Stereo: realtime=138985072327984 rtt=42000us offset=138685215327us delta=-5147us drift=26721us in 283.0135s (94.419ppm, 339.909ms/hr)
08/11 06:16:53 Trace: [Office + Kitchen + Living Room + Master Bathroom] [zoneplayer/raat] sync Devialet Phantom II Opéra de Paris Stereo -> Devialet Phantom I Opéra de Paris Stereo result: Success
08/11 06:16:54 Trace: [Office] [LowQuality, 24/48 MP3 => 24/48] [100% buf] [PLAYING @ 4:43] P3
08/11 06:16:54 Trace: [Kitchen] [LowQuality, 24/48 MP3 => 24/48] [100% buf] [PLAYING @ 4:43] P3
08/11 06:16:54 Trace: [Living Room] [LowQuality, 24/48 MP3 => 24/48] [100% buf] [PLAYING @ 4:43] P3
08/11 06:16:54 Trace: [Master Bathroom] [LowQuality, 24/48 MP3 => 24/48] [100% buf] [PLAYING @ 4:43] P3
08/11 06:16:55 Trace: [Office + Kitchen + Living Room + Master Bathroom] [zoneplayer/raat] sync Devialet Phantom I Light Chrome Stereo -> Devialet Phantom I Opéra de Paris Stereo result: Success
08/11 06:16:55 Trace: [Office + Kitchen + Living Room + Master Bathroom] [zoneplayer/raat] sync snd_rpi_hifiberry_dacplus -> Devialet Phantom I Opéra de Paris Stereo result: Success
08/11 06:16:55 Trace: [Office + Kitchen + Living Room + Master Bathroom] [zoneplayer/raat] sync Devialet Phantom II Opéra de Paris Stereo -> Devialet Phantom I Opéra de Paris Stereo result: Success
08/11 06:16:57 Trace: [Office + Kitchen + Living Room + Master Bathroom] [zoneplayer/raat] sync Devialet Phantom I Light Chrome Stereo -> Devialet Phantom I Opéra de Paris Stereo result: Success
08/11 06:16:57 Trace: [Office + Kitchen + Living Room + Master Bathroom] [zoneplayer/raat] sync snd_rpi_hifiberry_dacplus -> Devialet Phantom I Opéra de Paris Stereo result: Success
08/11 06:16:58 Info: [stats] 27315mb Virtual, 688mb Physical, 128mb Managed, 309 Handles, 83 Threads
08/11 06:16:59 Trace: [Office] [LowQuality, 24/48 MP3 => 24/48] [100% buf] [PLAYING @ 4:48] P3
08/11 06:16:59 Trace: [Kitchen] [LowQuality, 24/48 MP3 => 24/48] [100% buf] [PLAYING @ 4:48] P3
08/11 06:16:59 Trace: [Living Room] [LowQuality, 24/48 MP3 => 24/48] [100% buf] [PLAYING @ 4:48] P3
08/11 06:16:59 Trace: [Master Bathroom] [LowQuality, 24/48 MP3 => 24/48] [100% buf] [PLAYING @ 4:48] P3

Hi @Ettrig

Sorry for the delayed response here.

If you play to each of the devices in your setup individually do you still experience this issue?

You mentioned you ordered powerline adapters — Have you noticed any change since using those?

If you group them in Roon and don’t use the Stereo Pair feature does the same issue occur?

Hi there. Thanks for the response.

Since installing powerline-adapters, I have actually managed to get playback working well.

I’ll never more attempt WIFI for Roon. I assume the way playback is handled (need syncing all the time), even small latencies can introduce issues…

I wish Roon had better error handling, logging and reporting. Wrote a separate thread about that here:
Better Diagnostics and Logging - Feedback - Roon Software - Roon Labs Community

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