Set it to 30 like in your first post. A few post later I read about 25 in color. Colors are now fine, but I go for the xbox series x settings that Vincent showed on his HDTV YouTube channel.white balance may change from 1 to 5 points from panel to panel , but not more , so my hypothesis for his problem is that he is not in HDR , but in SDR. in that case a 50/38 with colour at 26-30 will produce this kind of oversaturation. Starting with default white balance , will give you a colder rendering but will not change saturation so much like his description.
But I have to say it again: your TV settings are awesome! I liked my new TV but with your settings it is like another upgrade ☺