So don't update in the middle of your work day. It literally pops up in the corner saying it needs a restart after installing what it can while the system is running, and you can delay it. It only forces a restart when you've delayed it several times already over multiple days.
Most updates on my system are handled overnight, outside the active hours I've set in the settings. So it doesn't affect my usage at all. I get on in the morning with a freshly updated system, and if I left apps open overnight, they are reopened where I left off. I only see updates when I tell it to update manually.