NetFlix allows subscribers to change how Netflix streaming consumes their data. You can simply change the data usage manually via your NetFlix account settings.
Available options include : Auto, low, medium and high.
The video quality of the “auto” option adjusts automatically based on your current internet connection speed.
The “low” option lets you stream videos in basic quality, up to 0.3Gb per hour. Yes, that would lower the image quality at the same time, but at least it would be more likely to play smoothly.
To manually change the data usage, sign in to your account, go to “My Account” > “Playback Settings” and select your desired option.