Problem with new multi monitor support option

Dear guys,

I’ve got the same problem like it was already postet in this thread, but I couldn’t find an answer:
http://forum.unity3d.com/threads/problem-with-new-multi-monitor-support-option-in-4-6.275684/

It seems that since this option is available I can’t use stereoscopic rendering via NVIDIA 3D in my projects, which worked before, I only found it out now as I tried it again with newly compiled versions.
Can I somehow switch this option off?
I found out that in an application provided here:
https://dembeta.repositoryhosting.com/trac/dembeta_active-stereoscopic-3d
the option ist shown grayed, so not usable und here the stereoscopic will work, not only because of the project’s content but I can turn it on and off again. How can I manage that? I couldn’t find out, neither for Unity4.6 nor for Unity 5.1.

Many thanks in advance,

RunRun

Anyone?
It might be enough to turn off this “select monitor” option, like the guys did at
https://dembeta.repositoryhosting.com/trac/dembeta_active-stereoscopic-3d
in the Resolution dialogue, this seems to have an effect.
Thanks,
RunRun