The battery life is more or less the same for me. I got 6 hours plus sot when reaching around 50%. Same as marshmallow. I did factory reset though.

Factory data reset are much easier way(beside the backing up process which is troublesome) to resolve battery performance drop after Nougat update. Mine were in the same situation as u and factory reset kinda work for me.

About 50% left after about 8 hours SOT.

P2 & LaFerrari Aperta... .My "suprise" is almost 100% perfectly done. I managed to win free entry into the biggest annual Motor Show in Poland (4th in Europe). However, before starting, an Open Camera sometimes ditches stereo sound to mono itself or (more often) after resuming filming  with default settings ;/ It's hearable in a Giulia video (from 0:07 to 0:32)  but next one with Arrinera (Polish sports car prototype made in co-operation with Brits) is perfectly "stereo". Today I tried setting ""default audio source" inestead of "camcorder" and inside a shopping centre I always received stereo sound (several times).  I'm back at the stand tomorrow and more is still to come Fell free to check out all of them (Beginning of the Ferrari film is about 70th anniversary and at 2:38 there is English speech)