@wholookshere I have this setup running. AMD Ryzen 7 9800X3D, 32 GiB RAM, RX 9060 XT, headless under #debian #trixie.
First I tried to go with a virtual monitor (kernel parameteramdgpu.virtual\_display). That was a total PITA. a small HDMI EDID adaptor for 20 Buck off amazon did the trick. Then autologin into KDE, and #sunshine works just fine.
Decent networking is important, I started with WIFI 7, and... that's fine *most of the time*, but then I upgraded to PLC.

@wholookshere Oh, and gaming wise it's the whole nine yards. Steam, Heroic Launcher off Flathub for Epic, GOG, Amazon drops and Battle.net (#ForTheAlliance!). All working just fine.

@wholookshere again, for me the simplest solution would be an HDMI EDID Adapter. 4k 60 Hz, HDR, all possible. Sunshine can do 4k with HDR,