Little late to the party here.
The result I have with forward rendering + MSAA enabled has significantly increased the visual quality of the HMD however,
when enabling forward rendering it seems to have added a strange specular edge to the materials that flickers?
On screen this is not so visible but with the lower resolution of the HMD (vive) it becomes much more noticeable and also introduces strange white reflections at some perspectives.
I believe the reflections are coming from the roughness of the material, so get the feeling it maybe down to the reflection sphere.
Looking for more information on the reason for the added specular edges so I can work with the limitations to get the best results.
I have noticed it has been mentioned here but not understanding the reason or how to resolve.