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[Gear VR] Dithering between LODs is incredibly performance taxing

I have been experiencing an issue where performance drops significantly if I am looking at an actor, close up, with LODs and dithered LOD transition option turned on (in the material). The closer I am to the actor, the more significant performance drop is.

I don’t believe performance drop happens during one LOD transitioning into another, but when base LOD is being rendered and camera is really close to it.

If I turn off that option in the material, I have no performance drop at all.

Bug report is here: [Gear VR] Dithering between LODs is incredibly performance taxing - UE4 AnswerHub

Any idea if it’s a bug or if I am doing something wrong ?

Thanks