HDMI has quietly turned into a Swiss Army knife for living rooms, and manufacturers such as Television and Soundbar brands ...
I don't really need this but... I have a 4k HDR 144hz display (LG C5 OLED) and I've verified that 144hz is turned on; and a GTX 1070 (that everything I can find says will do 4k HDR at 144hz over HDMI) ...