Random dropouts during playback on Qobuz (ref#YHCN4Y)

Tinkering
1

What’s happening?

· Something else

How can we help?

· None of the above

Other options

· Other

Describe the issue

Random short dropouts playing Qobuz or local files

Describe your network setup

fiber modem router (French Livebox 5)
-> TP Link T2600G-28TS 3.0 switch
-> Docker container steefdebruijn/
docker-roonserver : latest on SSD on a Synology NAS RS3617xs+ with 16Go of ram (Roon 2.0 (build 1455) production)
-> Trendnet TEG-S1 160TX Gb switch
-> MacMiniM1 endpoint Dirac CoreAudio-> USB OktoDac8Pro grouped with
-> RSPi Ropieee -> USB D10 dac (used only for vizualisation)

3

Hi @SEBASTIEN_MICHEL,

We can’t officially support Roon in a docker, but we’ve activated diagnostics to take a closer look and make some suggestions.

RoonServer is logging sample dropouts between your server and endpoint and timeouts with downloads from streaming services. This occurs more frequently with higher sample rate and bit-depth content. Taken together, RoonServer in this setup likely does not have reliable upstream access and sufficient bandwidth to download and distribute larger files to your endpoints.

I suggest simplifying network topology to reduce the number of variables in your networked audio chain. Bypass the L3 switches and anything else that could potentially misroute traffic, then add elements back in one at a time.

4

Hi, Thank you for your answer. My other endpoints never had dropouts. They are even further from the roon server and behind other switches. 2 Transporter+spdif dac, one RPi+ usb dac also, 3x Sonos
Only the macmini seems to have errors.
An update to mac os sequoia seems to improve stability.
There are many articles on “Audio stutters with USB Dacs on Mac M1” and I would like to be sure of the origin of the problem. Roon or MacOs…

5

network quality -sv
I do not see any network trouble…

Capacity:

Uplink capacity: 280.222 Mbps
Accuracy: High
Uplink bytes transferred: 289.466 MB
Uplink Flow count: 10
Downlink capacity: 274.057 Mbps
Accuracy: High
Downlink bytes transferred: 570.743 MB
Downlink Flow count: 16

Latency:

Idle Latency:
2834 RPM (21.167 milliseconds)
Transport: 3137 RPM (19.125 milliseconds)
Security: 1528 RPM (39.250 milliseconds)
HTTP: 11707 RPM (5.125 milliseconds)
Accuracy: High
Uplink Responsiveness: High
2045 RPM (29.336 milliseconds)
Transport: 1864 RPM (32.186 milliseconds)
Security: 1652 RPM (36.309 milliseconds)
HTTP: 2308 RPM (25.990 milliseconds)
HTTP loaded: 1416 RPM (42.367 milliseconds)
Accuracy: High
Downlink Responsiveness: Medium
280 RPM (214.099 milliseconds)
Transport: 845 RPM (70.972 milliseconds)
Security: 382 RPM (156.962 milliseconds)
HTTP: 720 RPM (83.274 milliseconds)
HTTP loaded: 185 RPM (323.406 milliseconds)
Accuracy: High

6

Another network test (iperf3) show no error…
I would like to keep my L3 switch. I am using link aggregation with my NAS.

[ 5] local 192.168.1.49 port 49297 connected to 192.168.1.62 port 5201
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.00 sec 112 MBytes 941 Mbits/sec
[ 5] 1.00-2.00 sec 110 MBytes 919 Mbits/sec
[ 5] 2.00-3.00 sec 111 MBytes 932 Mbits/sec
[ 5] 3.00-4.00 sec 110 MBytes 924 Mbits/sec
[ 5] 4.00-5.01 sec 111 MBytes 930 Mbits/sec
[ 5] 5.01-6.00 sec 110 MBytes 925 Mbits/sec
[ 5] 6.00-7.01 sec 112 MBytes 932 Mbits/sec
[ 5] 7.01-8.00 sec 110 MBytes 921 Mbits/sec
[ 5] 8.00-9.00 sec 111 MBytes 932 Mbits/sec
[ 5] 9.00-10.00 sec 110 MBytes 925 Mbits/sec

[ ID] Interval Transfer Bitrate
[ 5] 0.00-10.00 sec 1.08 GBytes 928 Mbits/sec sender
[ 5] 0.00-10.01 sec 1.08 GBytes 927 Mbits/sec receiver

7

Mac silicon T2 security ship seems to be the culprit…
Powered USB dac like mine seems to be impacted.
Have other roon users, with a similar configuration, been in the same situation ?
I’m not sure if support actually monitored my RAAT flow…
"This occurs more frequently with higher sample rate and bit-depth content. " is wrong.
This occurs with low bitrates and local files also…
I’ve been looking for a solution for months.

Removing mac M1 seems to be the right option.

Miraculously, no more dropout with an old intel Nuc instead of the mac.

I cross my fingers.