I think it's highly unlikely that the M4 mac is actually limited to 60Hz for all external displays. I'm running a 1440 ultrawide at 100Hz on an M2 right now. In

I think it's highly unlikely that the M4 mac is actually limited to 60Hz for all external displays. I'm running a 1440 ultrawide at 100Hz on an M2 right now. Instead this is likely the maximum px*Hz configuration supported, and smaller or fewer monitors are supported at higher Hz.