To be fair, no matter the OS updating on the latest and greatest immediately after release is always risky and should not be done unless you have clean backups and are ready to reinstall it all if needed. Linux testing, iOS, OSX, Windows 10, ... All of them.
If you want stability and safe update, you either use safe release version (Debian stable, Win10 LTSB, ...); you wait the service pack, or you give it a month or two to have issues found.
Unfortunately that's no longer how Windows works. I'm in the One Plus beta. If something breaks its my own fault. I was warned. Windows pushes updates to EVERYONE and you can't opt out.
You can, if you disable Windows Update from MMC service panel, it will not try to re-enable itself, but that's that. It is either all or none. No intermediate settings.
If you want stability and safe update, you either use safe release version (Debian stable, Win10 LTSB, ...); you wait the service pack, or you give it a month or two to have issues found.