Starting from driver 21.3.1 is no more possible to select successfully the following resolution for HDMI 2.0 connection
3840x2160 60Hz YCbCr chroma 422 10 bit.
If you select this, adrenaline software revert to 8bit.
I have checked and YES the monitor refresh rate in windows is set to 60hz not 59hz.
Even 21.6 driver is affected by this bug
GPU RX5700