A Reddit post lead me down the right path. For me the solution was on Windows 11:
- Uninstall all Gigabyte software
- Restart in Safe Mode and uninstall nvidia driver with DDU (critical to do this step)
- Boot into normal Windows once more and install the nVidia driver from Software Update (for me this installed a 400’s version nVidia driver)
- Install Gigabyte Control Center
- Boom, it finally shows up with RGB Fusion tab as well as shows up in SignalRGB (though it sucks in SignalRGB, it’s controlled as one RGB vs an ARGB strip)
- Download from nVidia their newest driver (for me, v554) and install, continues to function correctly.