Everything on your list has already been done, however, I do believe you are correct and my "48gps 8k HDMI cable" is not too spec. I ordered another cable and will have it Sunday. According to other people, this cable works. The only problem is it's to short.
But having an hdmi cable drapped in...
Tried clean driver install too.
Perhaps it's the hdmi cable? I know those have been an issue. I ordered another 48gps hdmi, I'll be able to test it on Sunday.
This is a totally out there question.... But I bought the rtx 3090 from someone, "new", BUT, is it possible that he could have hacked...
The only setting that even allowed any 4k options is 8 bit ybbr4220. If I select any other option, it defaults to a very awefull resolution, and I must step up to 1080p first then fix the color options, then back to 4k.
I need some help with 4k / 120hz/ gsync WITH HDR on a LG CX using a RTX 3090. I can't get windows to turn on HDR. The switch is effectively disabled. Is there a setting on the LG that I need to enable/disable to get it to work? HDR works fine if the TV is at 4k / 60hz/ gsync. Actually, it...