still trying to make this work...correction to previous posts: the [*]Color Depth : Highest (32 bit) is actually the Desktop setting...Output Color Depth is 8bpc

So - wondering if a product like the gofanco Prophecy 4K EDID Emulator & Feeder – 17 EDID Modes, Programmable EDID Copier & Manager, Amplifies & Equalizes Signal (4K @60Hz YUV 4:4:4, HDR, HDMI 2.0a, HDCP 2.2, 18Gbps, CEC Pass-Through) might be able to make both sides talk(HP=>976=>LG B9)...advertised as solving most HDMI handshake issues.

No peep out of NVidia nor LG on this.