This TV is true 10bit, I have an amazon basics cable that is rated for 18Gbs (link below) therefore think I should be able to have 1440p 120hz with 10bit 4:2:2 or 1440p 60hz 10bit 4:4:4. According to Wikipedia there is enough bandwidth for either of those options.
Unfortunately all I seem to be able to achieve is either 1440p 120hz 8bit 4:4:4 (adrenaline does not give me any other options) or 1440p 60Hz 10bit 4:2:2 (adrenaline does allow me to change to RGB 4:4:4 but then it drops the colour depth to 8bit.)
Is this a cable issue or something else or am I misunderstanding the limitations.
Link to cable