Custom Resolution Utility (CRU)

[fandangos]

Hey Toasty, can you tell me if my idea would work before I put money on this?

I have a Sony 4K HDR TV hooked to a Nvidia Shield Pro 2019.
I'm able to gamestream in 4K and HDR (for games that use Nvidia API HDR) thanks to CRU since I use my PC with a 2560x1080p 144hz computer monitor that isn't 4K and isn't HDR capable.

The thing is, all the TV EDID is lost in the process and Windows HDR (for Forza 4) doesn't work.

I was thinking if this could work:
Get a dummy HDMI plug like this one:
https://www.amazon.com/dp/B06XT1Z9TF/?tag=mtests-20#ad

Plug my PC once directly into the TV and dump the TV EDID.
Use CRU to replace everything from the dummy plug for the TV information.

What I suppose would happen is that the tv would show up as a secondary monitor that I could use with nvidia gamestream.

Do you think this could work?

And just to state here, I tried to look for dummy hdmi plugs with 4k and hdr capabilities and I wasn't able to.