So, so far the only way we found to do this has been to use a Render Target on a material (UMG widget/Texture on a plan) and have this render capture do the zoom in.
Not really what we hoped for but for any kind of Zoom things, seems like it’s the only way to go around it currently in VR.
I’m leaving this quite simple, if you understand what’s meant here, then great, otherwise add a comment and I will try to help a bit more. 