Well, the solution is easy : implement it everywhere the best you can, and make it optional so that you can disable it on slow hardware. It's basically the way

Well, the solution is easy : implement it everywhere the best you can, and make it optional so that you can disable it on slow hardware. It's basically the way software updates has worked for ever. Only since apple ( because it controls both the hardware and software) do we see features not deployed on old hardware because it may eventually not give you the best experience.