Originally Posted by Luke Davis
I just noticed you have enable 50hz checked, that's unnecessary if you're in the USA. Also you have standard setting, did you ever try switching to RGB? That might fix enabling full UHD color.
Thank you Luke and others who have tried to help. Mystery solved.
So, the reason I had finicky content issues with the Vizio PX75-G1 is twofold...
1) The cables recommended on Amazon (8K HDMI Cable 3ft, BIFALE HDMI Cable 2.1 Support [email protected]
, Ultra-high Speed 48Gbps, Dynamic HDR, Dolby Vision, eARC) were not great. Monoprice Premium Certified (Monoprice Certified Premium HDMI Cable - 6 Feet - Black, [email protected]
, HDR, 18Gbps, 28AWG, YUV 4:4:4, Dual Video Stream) did the first part of the trick. Definitely better.
2) The in-wall cable that was put in it last year by my tech guy isn't up to snuff... it's 4K alright, but not 18Gbps/HDR capable... so when I connected the Monoprice cable directly from the Yamaha 7850 to the Vizio, things lit up big time. HDR10 no problem with Amazon Prime on Xbox (though that was possible even before the cable switch); Dolby Vision no problem via Netflix on Xbox - no hiccups, no issues. Stunning view, really. So now I need the tech guy to come and replace the cable he only laid out last year... I think I might ask him to put CAT6+adapters so I don't have to call him again next time there's a new standard like 8K UHDR or whatever that may be called
So thanks again all.