I have no problem with the relaunch, but it takes a lot of time to do the actual update at relaunch time. So the launch time with update is at least a magnitude

I have no problem with the relaunch, but it takes a lot of time to do the actual update at relaunch time. So the launch time with update is at least a magnitude larger than it should be. This coupled with the fact that Windows update is rather monolithical yet it should be simple to update most of the non-kernel parts without reboot leads to too many slow reboots :/