RTX is not supported in VR in UE4 as of 4.26. I also haven’t heard of any plans for that to change.
Currently my hopes are:
- Perhaps UE5’s lumen will be VR-capable and will give better lighting results than we have available now in VR.
- nVidia is doing a lot with lighting, RTX, and VR. My guess is if anyone adds support for it, it would be in nVidia’s branch.
All speculation at this point though.