Great, will appreciate this. I think, I already can see that RenderToTexture is broken (there is a standard QA map in UE3). There are two issues with it: 1) It depends on 'screenpercentage', the green border does not exist if screenpercentage == 100 2) HMD distortion is applied to the render to texture target (shouldn't).
I still would like to get your repro case just to make sure we are on the same page.
I Tried the test one again in 100, and the texture is not present for the map on the screen, just the red screen background. In the editor it is fine, but using pie or the rift does not show the map texture at all.
this is strange, because setting 100 has fixed my maps green border as mentioned in the email. That is the most crucial part on my end, but as the basic test of rendering a texture to a mesh is having problems for some reason. This was just a quick reproduction of a render texture camera displayed on a map on a mesh.