iOS version hangs for 10-30 seconds when switching from loading scene to game scene

@JoshPeterson We have filed a bug a couple of days ago. We're not sure if it's an IL2CPP issue (as we cannot seem to build with Mono any more). It is only happening on iOS and profiling didn't help much.
We have noticed this since Unity 5.3.2p3.

Here's the bug: https://fogbugz.unity3d.com/default.asp?772935_0b5ep6ntnu2d41jt