APPLE TV 4K using too much data when sleep

I have an APPLE TV 4K i found it burned 2700 GB in just 25 days. My normal streaming I dont even use 300GB over the entire month. I monitored the traffic in my router, when I power up my apple tv the traffic graph goes up sky high immediate and transferring data consistently for hours together even when I am not watching anything. The moment I get to home screen the transfer gets to normal rates and based on my stream videos. When it goes back to sleep the pattern repeats itself. My Asus router identifies the culprit program as iTunes, I dont stream my movies from iTunes, I only use netflix and prime video. Am not sure what Apple TV is doing, i tried force quitting apps, restarting apple tv but no avail it hogs data like maniac

Attached some screenshots from my router stats, if some one can throw some light at it, it has been driving me crazy.