Do you guys have "Ok google" enabled without knowing it. That is a serious battery hog which could explain that kind of drain as OK google would be included under Android system. Check in Google Now settings under "voice". That solved a friend's battery issues on a Telus Note 5.
yes I am aware of this, and no google voice is not enabled on my phone.
Yes I wiped the cache partition, and just screen and Android OS is the problem.ive installed greenify but no help from that so I Uninstalled it.
Btw, in settings->advanced features, make sure to disable all those features. Also for the Display, disable the "Smart stay".
Check your settings->Accounts, do you have any that are complaining of "Sync Error", if so, re-add the accounts because that causes battery drains too. Android keeps trying to sync something but it keeps failing.