Android Mobile Profiling

Hi i try profiling my project to android and i dont know what cause fps drops and spikes, i write stat from device and i see that is no render thread in top of the list when i expect this is render issue,

And i have no idea.
In scene i use:
1.instansed meshes,
2.culled distance
3. Forward Rendering.
In screen visible around 70k poly and 120 calls, but frame drops. I want upload profile file but attachment not support this format.
Thanks