This pertains those who use a Windows 10 laptop AND use their device's personal hotspot.
Since Windows 10 automatically grabs updates, and by default doesn’t care what connection it gets them from, this can be an issue if you are frequently using a mobile hotspot. To prevent udpates from consuming from your hotspot data, we need to inform Windows 10 that your hotspot is a “metered connection.”
How to set a Wi-Fi SSID as a metered connection
Start > Settings gear > Network & Internet > Wi-Fi > Manage known networks > (click your hotspot SSID choose Properties) > Set as metered connection: ON