You shouldn't be using gamma D when calibrating with the Autocal as the PJ is not in HDR and the JVC Autocal doesn't support HDR during calibration. You should set the gamma you use with SDR BT2020, with all the gamma settings set to zero. Gamma D will be calibrated along with the other presets, but it shouldn't be selected during the autocal. What should be selected is the lamp mode and filter mode you are going to use.So one should select the reference profile, set the gamma to D and do gamma and colour calibration? With the parameters all set to zero? Then go to user 1 and select the Rec2020 profile and gamma D and do colour again? With parameters set to zero? And then set the parameters where they belong?
Gamma D should only be used with HDR content, when the PJ is in HDR mode.
Again, I have recommended to set gamma manually to a standard gamma in your HDR BT2020 settings, so that when SDR content is played the correct gamma curve is applied. When HDR content is detected, Gamma D will be selected automatically.
Please read the new procedure, I've detailed all the settings and all the user modes I use.