Data usage..Does Channels use a lot Data when idled on my computer?

Hi does anyone know how much data the Channels uses? does it use a lot while idled on my computer? Sorry I am not very tech Savy, but my Data went up so much, and we really do not watch that much TV except in evenings for a couple of hours. Any tips on how to get it lower? Really appreciate it..Thanks

It only uses data when recording or watching live