Gemini2 - wrong FPS values in Android SDK?

[Grifel79]

I use Gemini2 camera with this Android SDK.
I am recording simultaneously color and depth streams.
I tried to record on 30 FPS and 15 FPS and measured the real FPS by myself.
This is what i got for 300 pairs of images (300 depth & 300 color synchronized) :

30 FPS in SDK:
Recording time in seconds: 5.779654081s
Recording FPS: 51.9120929824987

15 FPS in SDK:
Recording time in seconds: 11.149020620s
Recording FPS: 26.908242486639235

So it seems like 30 gives in reality 60, and 15 gives in reality 30.
Probably this is a bug =)