[Galaxy Note 4 Original Android Development] :
It is recommended you do, but android's stock battery stats seem to be not fully correct. If your battery percentage drops 1 percent every hour on the 3rd cycle when idle, then it is recommended to test it out using different tools. When I wanted to do that, I used GSam battery monitor and its root companion app from Play Store. If RILJ drains your battery, limit it to 800 using Amplify. For better standby time, which is all that any MM rom needs, use greenify. Greenify's shallow hibernation, aggressive doze and doze on the go are simply amazing.

Review from a Touchwiz fan(myself):

I'm on the August 16th build by [MENTION=1384487]erickwill[/MENTION] thanks to [MENTION=3855785]andrew.mackew[/MENTION] , and am gonna upgrade soon to the 18th. I've flashed supersu(instantly after the rom), flashed xposed, then Open Gapps STOCK, and then a little flashable I made myself (which flashes the all new Nexus Launcher, Google Wallpaper picker, Google Phone app(the latest one so I get all the newest functionalities, cyanogenmod uses the old android phone app, I keep that since it is required for calling), and my own edition of build.prop, by unpacking the latest builds before flashing them and using Beyond compare to keep my own build prop modifications and add the latest changes, and it also flashes the original Nexus 6P boot animation, ui sounds and ringtones so I don't have like 1000 ringtones preloaded, and it removes the bloatware like Pico TTS from the ROM, Nexus 6P's bootanimation goes great with my own Google 2015 Bootanimation since the google logo slides and the android logo starts.). So far, I'm lovin' it...... I needed a fast a stable rom with updates, security and good battery life and so far, nothing beats the latest builds. I only wish for the two real problems which are bt calls and that stupid messaging bug to go away.

The rom is basically really smooth and fast, and since it is now ODEXED, it boots up fast, and when you flash a new build, you don't need to wait that much for it to start.

I flash SuperSU v2.71 right after the ROM because it is my favorite version of supersu, and not that the version has anything to do with it but, since it is systemless, it removes that KERNEL message in the splash screen.

If anyone wants to use the rom, make sure you flash xposed(NOT XPOSED FOR SAMSUNG), and install USB for Marshmallow, Android N-ify(snapshots from xda) and Gravity Box to change vibration intensity and add a lot of cool stuff.

Also make sure you try the new Nexus Launcher and Google's all new wallpaper picker which also has a new feature where you can download brand new wallpapers online or set it to change the wallpaper everyday!

I don't mind the WiFi bug that much, because I barely use wifi anymore, but will post if I find anything useful.

I also notice huge(or as a person I really like would say u-ge) improvements since the August 5th build which was the one I tried before the 16th. Bt is a lot better, some minor bugs like glitches or lags in certain old apps are gone, and, with a little addition of the new launcher, the 18th build is actually really really good.... Also, If anyone wants to give it a try, let me know, so I upload my flashable which changes the UI a little bit and has the latest Google Phone app and some other stuff.

Big Thanks to [MENTION=3463426]RaymanFX[/MENTION] [MENTION=3463480]travis82[/MENTION] and [MENTION=1384487]erickwill[/MENTION] for these awesome fixes, patches and builds, and also big thanks to [MENTION=3855785]andrew.mackew[/MENTION] for sharing them.

Yes, just download the full firmware from sammobile or another trusted website for your device AND with your OWN COUNTRY's CSC, and first, wipe everything(internal storage, system, dalvik, etc) using twrp, then reboot into odin and flash the firmware, let it boot and then power it off and sell it.