Help with HTPC > Dr HDMI 4k > Sony Z9D

[tzr916]

I have Windows 10 HTPC set to 4k60 with nVidia GT1660ti connected through Dr HDMI 4k into Sony XBR-65Z9D, using Cable Matters certified 48Gbps 8K HDMI Cables. I've been going back and forth with HD Fury help, but all of their suggestions have made no difference.

Good news, the following Dr HDMI 4k setting is working, holds through reboot of PC and/or turning Tv Off/On:
GREEN #5 – 4k60-420-8b-300M-HDR-BT2020-3D-FULLAUDIO


But I cannot get any of the following to work:
CUSTOM – Extract Sony EDID with MonInfo, upload into DH4K
WHITE #8 – COPY DOWNSTREAM EDID (from Sony tv)
GREEN #1 – 4k60-444-600M-HDR-BT2020-3D-FULLAUDIO
GREEN #2 – 4k60-444-600M-3D-FULLAUDIO
GREEN #3 – 4k60-420-12b-450M-HDR-BT2020-3D-FULLAUDIO
WHITE #5 – 4k60-420-12b-450M-BT2020-3D-FULLAUDIO

Some of them I initially get a picture, but for all of them, after rebooting the PC, Windows/nvidia control panel is only showing 1024x768 or 800x600, and there's a RED X on the audio device.

Would it help if I update the Windows 10 "Generic PnP Monitor" driver using an INF created from my Sony MonInfo? Anything other thoughts?

Thanks for looking