I have a Gemini Lake-based board that can output 4K (3840x2160) resolutions at 60Hz via HDMI to a TV, but it is limited to 30Hz when connected to my 4K-capable projector. Several other devices (including an Odroid C2) can display 4K at 60Hz on this rig, albeit, with CoreELEC. I've observed the same behavior bypassing or through my audio receiver.
I've attempted to refresh the EDID data via SSH, with the projector on and connected, but the max resolution remains limited to 30Hz.
Is there a way to for the rate to 60HZ, to overcome this limitation of LibreELEC?