Adjusting the data usage settings for your account is the easiest way to reduce the amount of bandwidth used while watching Netflix. There are four data usage settings to choose from. Each estimate below is per stream:
Low (0.3 GB per hour) Medium (SD: 0.7 GB per hour) High (Best video quality, up to 3 GB per hour for HD and 7 GB per hour for Ultra HD) Auto (Adjusts automatically to deliver the highest possible quality, based on your current Internet connection speed)