Nice write up.  Both Unreal Engine (<a href="http:&#x2F;&#x2F;docs.unrealengine.com&#x2F;latest&#x2F;INT&#x2F;Support&#x2F;Builds&#x2F;ReleaseNotes&#x2F;2016&#x2F;4_11&#x2F;index.html#new:vrinstancedstereorendering" rel="nofollow">http:&#x2F;&#x2F;docs.unrealengine.com&#x2F;latest&#x2F;INT&#x2F;Support&#x2F;Builds&#x2F;Relea...</a>) and Unity3D have added support for this recently.