It is hard for a Raspberry Pi to work the ethernet and a USB sound card 
at the same time.  They both talk over the USB.
You will have better luck with an audio injector.  It works on the I2S port.
http://www.audioinjector.net/
Ted
On 11/22/2020 01:31:10, Evan wrote:
  Hi
 I installed OpenOb on a RasPi3 B+ using 'Stretch lite' OS, with a 
 UCA222 USB audio interface connected at both ends. After about one 
 hour, the receive end CPU shot to 100%, temp went up to 65 C and the 
 audio stopped, though network lights on the Pi's still flashing.
 Stopped the receiver, let it cool, then restarted and audio started 
 streaming again. Ran for about 1 hour, then audio dropped out again, 
 CPU at 102%.
 I re-formatted the SD card and reloaded OpenOb, same problem (also 
 tried with Buster lite, same problem).
 The prerequisites I used:
 apt install  gstreamer1.0-plugins-base gir1.2-gstreamer1.0 
 gstreamer1.0-plugins-ugly gstreamer1.0-tools gstreamer1.0-plugins-good 
 gstreamer1.0-plugins-bad gstreamer1.0-alsa
 apt install python-setuptools python-gst-1.0 python-gi python-redis 
 python-pip
 apt install redis-server (Receive end)
 pip install openob
 Has anyone come across this problem before ?, am I missing something 
 with the prerequisites ?
 Any suggestions would be appreciated.
 Evan
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