do you have to have AI brightness turned on for this to work?I discovered on the 2020 LGs Dolby Vision Cinema Home PM is implemented differently than on any previous LG. The previous LGs in this PM never followed PQ because the intent was to make the picture brighter and this is the way it was implemented. On the 2020 LGs once calibrated, Cinema Home follows the PQ curve. At first i thought there was a bug but in talking to LG they say that's the way it's supposed to calibrate. So on the 2020 LGs, DV Cinema Home is the DV IQ PM and when in this PM the TV will adjust the brightness and tone mapping accordingly depending on the light sensor. DV Cinema follows PQ but with out the dynamic adjustments. Although Peak Brightness is the same in both PMs, in DV IQ in a bright room you can see how it changes the tone mapping so you can see more near black detail that would otherwise not be visible. It works pretty well in my opinion.