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 batt...
My pleasure. And don't worry about screen on time. It's a useless statistic. The main culprit will be what apps are running in the background. If you have things like Facebook, WhatsApp, messenger, hangouts, Instagram etc all running with notificatio...
It's better but you need to take advantage of doze mode. In addition, if you blocked most app notifications in lollipop (and you should to squeeze out more battery life) then you would need to do it all over again.For doze mode go to the battery sett...