This has changed since an unwanted update this morning (I have it set to metered connection off but it still downloaded on bootup). There is no longer an Advanced Options link and a "metered connection" search in Settings just sends you on a roundabout chase. It's now hidden. After a lot of frustration, the workaround is this: Network & Internet / Wifi / Show available networks (link at top of the list) / a blue windows pops up bottom right of screen / click on your network / Properties link / window comes up with "Metered connection" in the list. Edit: or click on wifi icon in task bar.