HDMI 2.0. should support up to 144hz @2k.
But you have to make sure that the HDMI-cable and the HDMI-port are both HDMI 2.0 compatible. Older monitors may not have a HDMI 2.0 port built in.
Read this: https://linustechtips.com/main/topic/1022939-hdmi-20-144-hz/ This guys 144hz-monitor doesnt...