Poor performance on MobileContentScaleFactor < 1

It’s strange but if I set MobileContentScaleFactor to smaller value than 1 performance is worse but should be better…
I tested this issue on Nexus 4 and Samsung Galaxy Note II. On Nexus 4 works good but on Note II not.
For example on Note II with MobileContentScaleFactor=0.5 my game achieve 15 FPS and resolution is worse but with MobileContentScaleFactor=1 has 30 FPS…

Anyone knows what’s going on?

On 4.12 I’m still experiencing this issue…