Grounded - HDR Settings

This game does not seem to use the Xbox HDR system calibration settings. 

Try to find data about the peak brightness of your TV on the site RTINGS.COM (value HDR peak brightness 10%). Before adjusting, make sure you have set the TV settings correctly.

Adjust the in-game Max Brightness slider to match your TV's peak brightness (slider values in nits). 

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If your TV always does tone mapping, then set the Max Brightness slider value to several thousand nits.alert-info

The Сontrast slider adjusts the black level. Leave at 0.50 or adjust as needed (get deep black, but keep details in the shadows visible).

To understand how the Сontrast slider values affect the image, see the picture below:

UI Max Brightness slider controls the brightness of the user interface. Adjust to your preference.

UI Contrast - leave at 0.50.