On my end, for some reason wuauclt.exe is running constantly. Windows Update usually runs as a service which eventually stops after a while after boot up. Because of that process constantly running, it doesn't stop the service. I already have Automatic Updates active...
I've done DISM /Online /Cleanup-Image /Restore Health, I've done sfc /scannow. I've done trouble shooting Windows Update and applying some fixes but it still starts up. Only thing that stops it is stopping the service manually. And the jarring thing is that its running under my account... (even did a System Restore to 2 days before the Updates. Ran all that, scanned everything. Nope, the process still starts up and doesn't stop).
Wonder if they broke something in the latest updates. :/ It doesn't constantly use CPU on my end but it doesn't stop so...
But that's only on my end... not sure what might happen for you.