do you mean that the aliasing issue appeared at some point? Do you recall a scene that without any modifications on your end started to suffer from aliasing issues while it had worked well previously? I am asking because we cannot identify any recent development that could cause such regression.
The problem with aliasing in VR is that a VR display is viewed from a very close distance. So, a single VR display pixel is covering much larger part of the human field of view than a single monitor pixel, which makes the aliasing issues more apparent. I am afraid that current mobile VR devices don’t have displays dense enough and GPUs powerful enough to leave much space for an improvement in this area.