Virtual reality build (Oculus DK2), long start up time

Hello,

I made a working virtual reality project (virtual reality checkbox checked) with Unity 5.1.2f1 version. I have a little problem though, when I run the exe and press play the screen goes black for 90 seconds and then the game launches (fantastic graphics quality, 1920x1080). When I reduce the quality to fastest then the load time is reduced to 60 seconds roughly. That is still a bit long wait time. Is this happening to others too? Otherwise the "game" works fine when it starts.

I'm running Oculus DK2, SSD, core i7-4470, 16GB ram and an AMD Radeon HD8490 grahics card.

Thanks for your responses.

Ps. is there a way to find out why the load time is so long?

 

Tried Unity 5.2.0b6 and the load time changed from 90 seconds to under one second. Now though the game crashes when changing level (Application.LoadLevel(0)). Also some other issues arose with the beta build.

 

how to build the project on unity5.1? i checked the virtual reality supported box but when building exe there is no DirectToRift exe