Default Battery on Maximus HD 6.0.1 getting worse (w/ latest firmware)

Hello guys, first of all sorry if someone has answered the question before but i really looked around and I could not find anything.
I am running on Maximus HD 6.0.1 with the latest firmware and I am S-Off with the kernel bundled with the ROM. Yesterday, I charged my phone to 100% I watched some Utube and used the FB app for a bit and went straight to bed with 91% left. I tuned on the DND mode and left both data and wi-fi on. When I woke up the battery was @ 79-80% which is way worse than Maximus 5. I have also noticed that the battery is getting worse in general. I am using Gsam w/ the root companion and the Xposed module for KitKat BatteryStats. Any advise is welcomed.

I have attached a jpeg with 3 screenshots

Thanks a lot
Attached Thumbnails
Click image for larger version

Name:	m8 battery 1.jpg
Views:	33
Size:	127.2 KB
ID:	2840118