The HDMI standards are a mess. HDMI 2.1, in particular, is a uniquely frustrating mess, with haphazard support among TV manufacturers, cable makers, and devices that make setting up, say 120Hz gaming on a PS5 or Xbox Series X a uniquely harrowing experience. via Technology and News Today https://www.theverge.com/2021/12/29/22856103/hdmi-2-1a-spec-standard-mess-cables-source-based-tone-mapping-ces-2022