In Creators Update, They will just download Updates required to Keep Windows Running Smoothly even if on a Metered Connection, So doesn’t entirely block Windows updates in Creators edition unforuately either

I normally update manually when everything is closed, if I forget then it may download autoly and remind me it needs to restart at some point, but overall it works good, been running Windows 10 Since came out in 2015, First with Pro on my old PC, then briefly on Windows 10 Home on current system, then upgraded to Pro again.

Avast doesn’t interfere with the updating that I seen