Battery Life finally fixed!

Can anyone confirm this? I dont want to reinstall Windows 10 again until someone confirms this guide.
I manually updated all drivers to latest versions via Intel Driver and Support Assistant.

I have the 2016 version Mi Notebook 13.3 with Geforce 940mx

My current drivers are:

Intel gpu:
Driver Version
Driver Date

Driver Version
Driver Date
At the moment my battery lasts for about 3 hours - only surfing and some youtube videos. Windows 10 battery profile: balanced.