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Adept II

RX 590 only allows RGB 4:4:4 when set to 120Hz refresh

System Setup:  PC > Yamaha > LG (same result when PC > LG)
R5 2600X
ASRock X470 Taichi
ASRock RX 590 Phantom Gaming X (10.5.2 - have had bad experiences with later drivers)
LG 49Nano85 120Hz Native - HDMI 2.1
Yamaha RX V385 - HDMI 2.1

When I set my refresh rate to 120Hz, AMD switches from Ycbcr 4:4:4 12bit to RGB 4:4:4 8bit and I lose the option for Ycbcr entirely.  I have tested this both straight from the PC to TV and through the Yamaha, same results.  I can use Ycbrc 4:4:4 12bit at 60Hz though.

So the big question I have, is this a known issue on this driver / will updating to 10.21.2 fix it...or is this just an AMD thing that updating the drivers will not change anything?


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