Crackdown 3 - HDR Settings

The peak brightness in the game seems to be fixed and not adjustable. This game does not seem to use the Xbox HDR system calibration settings. 

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Typical brightness is around 650 nits. Brightness some light sources have a brightness of 1550 nits. If the picture seems too dim for you, use the tone mapping modes of your TV.

Adjust the Paper White slider to achieve deep blacks but keep shadow details visible.