

I have this setup with Plasma, and it is probably easier to do this at the Linux level. I added this to my kernel command line: drm.edid_firmware=DP-1:edid/lg-ultra.bin video=DP-1:3840x2160@60e
Where that EDID file I dumped from a spare monitor using a method I got here.
Anyway, it can be tricky to pick the right device, but I can confirm Sunshine sees it and works properly, and it can be managed like a normal monitor.
It’s always great to see someone scratch their own itch, so kudos. However, I’m curious what the actual pain point is? Does your mouse not sample fast enough? Noticeable input lag on a gamepad? Seems like this would be a bug with the implementation if it needs to be overclocked to fix…