I have posted on the Apple and Onkyo support forums as well as emailing Onkyo. I encourage all of us that are experiencing this problem to do the same. Hopefully one of the two will provide a solution to the loss of the ability to pass Dolby Vision from the ATV4K.
HT TCL 55P605, BenQ W7000, Pioneer UDP LX500, Panasonic LX1000, Firestick 4K, ATV4K, Pioneer SC-LX 701, DefTech, Klipsch, Martin Logan, SVS @ 5.2.4 Atmos
Stereo Sansui SR-4050, Dual 1219, Pioneer UDP LX500, Emotiva PT-100, Be One Audio MA100, Polk Monitor 10, SVS SB1000
Last edited by bguzman; 03-31-2019 at 09:06 AM.