HDR with Photo and 32bit preview to true HDR monitor Asus PA32UCX. To output HDR from AP, you need to enable HDR On in WIn 10 to get the EDID working for HDR so the 32bit HDR selection is active in AP. But, what WIndows does is it seems to then create an ST2084 (PQ) to 2.2gamma EOTF to the monitor so SDR content looks correct. It then relies on the HDR content to be tagged correctly for the ST2084 EOTF to work. In AP, the HDR becomes active but with a 2.2gamma. I need to work in ST2084 for VFX/cinema/HDR for video. So it seems AP does not send a tag correctly to Windows to pick up the profile selection in colour settings. I have tried loading a ST2084 profile in both AP and Windows default etc and it always remains a 2.2gamma, not ST2084 EOTF. I have tried the OCIO config with ACES, but again it seems it is interacting with the ST2084 to 2.2G that Windows is applying.
Any ideas please. HDR is not usable if the EOTF is wrong, regardless of getting the peak luminance to 1000nit and the primaries correct.