Hello,
Apparently Radeon RX 570 does not support Miracast due to the drivers provided by AMD itself. Someone on a forum suggests using standard Microsoft drivers to overcome the problem.
It seems like too drastic solution to me so naturally I would like the solution to be found with the card manufacturer. Maybe I haven't searched thoroughly in the forums or on the official website and I would naturally be very grateful to anyone who was able to give me a possible solution that isn't too radical.
Thanks for the attention
Luigi