Hight Internet data consumption in Windows 10.

1. Click on Start Menu.

2. The click on Settings.

3. Click on Network & Internet.

4. Select  Wi-Fi.

5. Click on Advanced options  >  Set as metered connection.

I suggest you refer to the below Microsoft Help Article as a reference. 

Refer to the section: How does setting my network connection to metered affect my PC?

http://windows.microsoft.com/en-US/windows-8/metered-internet-connections-frequently-asked-questions