Hi,

I'm running a system-wide PulseAudio instance on a headless box connected to my 
speaker system. The sink is broadcast via Zeroconf and I use it to play music 
and movies via WiFi from my laptop. The headless box is connected to the WiFi 
router via a wired connection.

Unfortunately, every couple of minutes or so, the sound stutters for a short 
time, then returns to normal.

Does anyone have any suggestions as to how to debug the source of these issues? 
My best bet is WiFi latency. I tried increasing the buffer size (via 
default-fragments and default-fragment-size-msec) on both the client and server 
machine but I haven't seen any considerable improvement. The actual network 
packets seem to always be around 1.5K in size, which would be around 4ms of 
uncompressed sound with 32-bit stereo samples at 44.1kHz, and that's without 
any overhead. If my calculation is true, this would explain the stuttering, as 
the network latency towards the machine is at a baseline of ~2ms but can spike 
sometimes due to nature of WiFi. 

I'd be happy if there was a way to e.g. tell the native-protocol-tcp module to 
buffer more of the audio and play it, as I don't mind the increased latency; I 
just want to get rid of the stuttering and all applications I use manage 
PulseAudio latency compensation quite well.

Has anyone else had this issue and resolved it?

Many thanks for your help.

Best,
-- 
  David Davidović
  [email protected]
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