Cannot cancel charge optimization (Z5C E5823)

[SuperMan1986]

i used to cancel charge optimization when i needed the little extra battery for a long trip.

now it donst really got canceled.

that's shows like it canceled(the switch is off)but the max chrage is not more than 3.299volt

(usually when i've canceled that i notice 3 things when this option is really off:

1.max voltage is 3.350 and not 3.299

2.after restarting the phone the (%)percentage was going from"90% to 80%"

3.battery app shows me that i have 2500ma instead of 2700Ma  

(changed every restart and rechrage i have SS if needed)

i think is since last upate i hope it will be fixed in nougat and its not hardware problem i tried everything beside factory rest

[NeoBeum]

Yeah, just out of curiosity I checked mine last night and I'm at 4V 2.7A

[SuperMan1986]

forgot to say the max voltage i checkin when the batt is 100%

i guess 10% less wont kill me 

[Urp]

Batterytime of my Z5 C went from 26 to 8 hours after last update, how to fix this?
While updating, there was information about something called "Batteryoptimization", and that this would be possible to turnoff in settings... But no, I can't find a way to restore it. Now my phone is more or less useless.