- Edited
ozzmanj1 I don't have much in the way of solutions unfortunately. It's entirely possible you've got yourself a lemon, and either the battery health is poor, or some hardware component could be drawing excess power; there are many possible factors and I really don't know.
I really just wanted to say that I don't do any additional tweaking of battery optimization other than setting some apps to unrestricted, and I am not seeing anywhere near the idle battery discharge that you are. I have several apps running as background services (VPN, K9 mail, Signal, etc.) and if I don't use my phone much during the day, my battery will still have about 80% capacity remaining when I go to bed.
In case it matters, my carrier is LTE-only.