As AHR is now "mature", I decided to go and try to implement it inside Unreal Engine 4. Still at early stages, but getting there.
Also, AHR is rendering at about 40 FPS on my system for the High preset ( 16 rays/ 32 samples), all while using less memory, as one of the grids is no longer needed.
Anyway, for more information, follow the thread here : Unreal Engine Forums link

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