Thanks for the tips on W10.
I did find a Plugin to disable HTML5 autoplay that seems to work ok.
I did not find the "metered data connection" selector in W10 but will keep looking.
I think I turned off the Flash Adobe capability, but not sure.
I still am curious if the mobile units use less data to display a web page than does a full featured computer.
I have found no conclusive result in searching the web. Probably because everybody uses each unit differently.