I have found the same.
And it is quite cpu intensive.
It autostarted daily.
I had it set to check for updates but let me pick when I wanted to install them.
Windows(7) did not like me when I turned off auto updates.
But, I am happier checking only when I am prepared to actually do updates.
Not a plus for windows 10 that is going to check and install on THEIR schedule, not mine.