You didn't reveal which Windows so I'll show how Windows 8 helps here.
OK, just how much does Netflix use a hour? For that I turn to
OK, that's 2.3GB a hour so if they could chew that up in less than a month. You did state a household so that's even easier to blow past.
My Daughter's Cable Provider just recently upgraded her service to Fibre Optic with the NextBox feature added...She's on a monthly plan allowing for 100GB's a month, lately the household has gone way over by the end of the month...My question out there is, What could be the culprits gobbling up the GB's and could NextBox be a good contributor ?? Thanks