I have a sky quality meter SQM-LE which is part of my KStars setting.
From time to time - KStars idles in the background - I ear clearly the fans of my computer which means that it uses suddenly a lot of power.
Effectively the app Activity Monitor shows the culprit : indi_sqm_weather.
And even two indi_sqm_weather drivers as can be seen in the attached doc.
In some occasions I saw even four( !) indi_sqm_weather drivers running at the same time.
I attach the log file.
Something is wrong with the driver or with the device ?

The driver was not shutdown properly? Make sure to kill all indi_* drivers before you start.

I think that the problem could arise from the fact that I run KStars (simulators) on two computers at the same time. And it might happen that they call the SQM-LE at the same time thus crashing the driver.
I will do more testings and I will report the results.