In my office, I was one of the first to get 10 about a year ago. It has been an average of about 2 updates to 10 per week. It has been an average of 6 or 7 updates to other software that depends on the OS.
I come in at 6:30. I often can do nothing productive until 9 am.
Just schedule updates to run after hours so won’t be a problem while you’re using your computer. Very easy. Go to “Change Active Hours” (just type it in at start screen).
Win 10 rocks.