Re: What about auto-updates?
Windows 10 updates about once per month, so for my work PC, that's about one day out of twenty workdays. Mine's a fairly low/middle spec (i5-4440, 12GB RAM, SSD etc) and it seems to add about 20s onto the boot time (dunno about shutdown, I'm on my way out the door by then).
An extra twenty seconds per month, is less than I spend making tea per day.
Am I just being very forgiving, or does everyone else have much worse problems?