Using low GPU priority for background rendering

Question

How to debug "Using low GPU priority for background rendering."

I see on console of an app using AVFoundation on iOS8 beta4?

I suppose I'm doing some unneeded work that I could skip saving the battery and eliminating the message I've tripped

Answer 1

according to apple documentation, iOS does not allow its GPU to any background application for obvious reason that its not on Foreground.