Might this be a hardware issue?  Have you tried running something else on that PI for an hour or longer and see if it heats up the same way? 
 
Lorne Tyndale
 
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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