I have the same problem, installed the update last week, then my phone battery starts draining like crazy, Android System uses 83% at night without using it, the battery is empty in 3 hours, I had reviewed apps to find which is the problem and found that LG Backup consumes 80% and also that horrible application called Quicknote that is also using 80%, does anyone has find a solution ?, The worst thing is that phone is getting hot, this Android update is really BAD. I just want to add that is the 3rd LG G5 phone that has the same problem, since warranty has change it for me 3 times.