[Windows Mixed Reality] VR fullscreen.

Did anyone successfully modified “WindowMixedRealityHMD.cpp” to have fullscreen VR preview on monitor?

I’ve tried values from this thread Window mixed reality(wmr) How to fill the screen without blanks - UE4 AnswerHub but my image is distorted…

Or maybe there is alternative way to have fullscreen VR ? (without using Windows Mixed Reality Portal or rebuliding engine from source).