I have been seeing Logos 6 run up to 288% usage at times when I am not doing anything with Logos..
I had Logos open to my Sermon prep layout. But I was using internet employer at the time and then the fan turned on, so i checked to see what App was using the power on Activity Monitor.
I had not downloaded anything and i was not indexing..
Logos had been running maybe 30 minutes, but was sitting idle at the time or should have been.
attached are my log files.
5773.LogosLogs.arnoldgarrison.20160604-124534.zip