Oppo 7 Color Os 2.0.8i wifi battery drain! And so many google wakelocks!

I have ColorOs 2.0.8i and my wifi drains my battery too much! In 24 hours i lost 11% battery. I dont think this is normal..

I think it was ok at start, then i made some changes and the problem appeared :

I have disabled the options Network Notification, Scanning always available, keep wifi on during sleep, avoid poor connections.

Wifi frequency ban 2.4Ghz only

Wifi optimization enabled

I have enabled fast dormancy from engineering mode, but i dont think that it drains my battery..

Also some strange alarms from google and location services ( i have gps off all the time!! ) from betterbatterystats.

Phone at idle has the same battery use with the screen time! Screen time 1h, Phone Idle 30h. Maybe it has some logic, but still.. wifi drains too much battery.. And so many wakelocks!

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