I am getting barely over 3 hrs. But then again I was getting about 4 hrs 15 min before this build and never got more than 4 hrs 30 min even when the SP3 was brand new.
When another one of us decides to take a risk and try a new Windows 10 Preview Build, we all end up getting smarter.
@wynand32, Let us know how it goes - after all the cloud and Store activity is satisfied.