Seems weird, that would be a huge loss of performance for CGN cards.
RX470 8gb - 16 mh/s
RX480 8gb - 19.5 mh/s
RX580 8gb - 25 mh/s
Vega56 - 33-34 mh/s
Vega64 - 35-37 mh/s
For 5500XT, memory bandwith makes it impossible to reach 65MH/s.
I wouldn't use this "pill".
There is no way RX5500 XT does 65 mh/s. There is no source code at all. I would not trust to use this even to test in my PC.