I just noticed this update to a very old thread about broken DSC in macOS. I pretty much gave up on this ever being fixed and I am now shocked. 
Can anyone confirm that 4K 144Hz HDR is actually available on an Ryzentosh using DisplayPort 1.4 DSC, in Sonoma?
If it works, I would be very tempted to upgrade from Ventura, even if WiFi/Bt stop working.

Can anyone confirm that 4K 144Hz HDR is actually available on an Ryzentosh using DisplayPort 1.4 DSC, in Sonoma?
If it works, I would be very tempted to upgrade from Ventura, even if WiFi/Bt stop working.