The game is NOT using/applying Playstation or PC HDR Calibration app settings.
The game has a fairly good HDR implementation as it offers an in-game Peak HDR Luminance slider (not in nits) which can go up to 2.000 nits.
Min luminance is also adjustable and when set to 0 black levels are perfect (no black level raise).
If you have an LG OLED and:
> you're using Dynamic Tone Mapping or Dynamic Contrast:
Set HDR Max Luminance slider to: 100 (Max; which will be around 2.000 nits)
> you're using HGIG:
Set HDR Max Luminance slider to: 50 (which will be around 800 nits) or 60 (for G2/C4) or 80 (for G3/G4)
If you don't have an LG OLED and:
> you don't have an HGIG option:
Leave HDR Max Luminance slider to: 60 (which will be around 1.000 nits)
> you're using HGIG:
Set HDR Max Luminance slider to the exact point where the logo disappears
In all cases, set HDR Min Luminance to 0 as that will correspond to perfect black levels.
BONUS:
Disable both Film Grain & Chromatic Aberration: for much improved picture clarity