So today my battery life was pretty good. I don't know if it's a coincidence, or maybe something I was tweaking.
I woke up, turned on my phone with 100% battery. Uninstalled Gsam, rebooted phone and cleared cache, and turned OFF WiFi. I ran with WiFi turned off all day.
And my battery life was much better. Phone is on for 15 hours, most of it idling cause I was at work, and I am down to 72% battery left.
This was with my AT&T Note 5.
So it appears that I am having the WiFi bug that some on here have mentioned. Sounds like a software bug that won't be fixed until we get Marshmellow. Weird bug though, being as Android has always had better battery life when on WiFi in the past. Samsung's programmers must be slipping.
One thing I don't understand is that my Verizon Note 5 has version OJ3, and my AT&T Note 5 is still on OJ1. I wonder why AT&T hasn't updated yet?