Profiler useless when multithreaded rendering is enabled

The profiler seems to give useless information when multithreaded rendering is enabled in player settings.
(This is running on a Kindle Fire HDX 8.9")



Compare this to the output the internal profiler which gives the same result as a C# FPS debug output label on the screen.


The game is running at just over 40fps for a trivial scene on a device with a screen refresh of 60hz but the profiler gives no useful information.

 

I'm having the same issue with the profiler when that option is enabled, however my fps are not decreased when enabling it on a HTC One M7 with a scene consisting of 15 draw calls and 15k polygons. I'm unsure if there is any benefit by enabling that option, there is no documentation of that feature it seems. Hopefully someone can reply with more details.