All these keys are available on the numpad w/ numlock disabled

you’re probably right, I have an RDNA1 card, I have no idea what could be causing this otherwise. probably some weird amd driver issue

These older (maybe also current) amd gpus for some reason defaults to higher vram speeds when a monitor has mor than 60hz. The fix requires generating a custom edid file, which is a great pain in the ass to get to work