If you are talking about UHD Blu-ray discs you need an Intel processor and UHD player to run those types of discs.
Ryzen processor doesn't have the SGX code to run UHD Blu-ray movies, only Intel does.
Is this what you are talking about?
If Cyberlink says it is not supported it should mention which part of your hardware is incompatible with UHD playing. I bet it says your processor "Failed" correct?
On my Ryzen PC, Cyberlink says I can run Blu-Ray discs without any issue but can't run UHD discs because I don't have a Intel processor nor a UHD player.
I have a Ryzen 7 3700X and Blu-Ray Player and GTX1070 GPU card.