I have the same issue with quad material when using HDMI output through my UHD722, when using the digital output from my Oppo directly to my G68 everything is fine...

818v3, Trinnov Altitude 32-16, 271, G68ADV, UHD722, DSP8000(U)SE, DSP5200 (SL), DSP5200HC (SL), DSP3200, 4xDSP320.2, G98, MS200, Prime HA, Ex2, 561, 598DH, 504, Roon Lifetime, Roon Rock, 218, Oppo 103, Panasonic UHD9000