Packaged Instance Stereo has low quality in left eye

Hi guys, we have a VR project that makes use of the Instanced Stereo rendering perk in engine. In our editor tests everything seems fine and the quality is consistent and scaled evenly with the pixel density, but in any package we bounce out the left eye seems to be rendering at a very low quality with no AA. We’ve narrowed it down to the instancing as if we bounce with stereo instancing disabled the quality is the same for both eyes. Although, interestingly, when we tried this we lost all stereo layer rendering ability in VR. (Though we’re not concerned with fixing this as the performance gains from instanced stereo being enabled is pretty much a necessity.)

Is there any obvious setting that we’re missing that could cause this to happen?