Those of you trying to work with DirectX stereo via the “Stereo Display non-head mounted” option, see requirements within the Unity documentation at this link:

Also – I have confirmed an issue that I have heard of from some users regarding multiple displays and the above mentioned stereo option – here is an official issue within Unity’s issue tracker regarding it:

I’ve locally confirmed that this happens on a new power wall we’re setting up – potential work-arounds until this is resolved:

– Try an OpenGL build with DLL injection – For those using Quadro cards – use nVidia’s Mosaic mode to create a single display – Attempt to use a different stereo technique (Side by Side, Top / Bottom) if your hardware supports this.