Some notes on Black Crush may help fix this issue

gfg59204

Please tell us some basic information before asking for help:

1. Model Name: ROG_Phone3
2. Firmware Version: QKQ1.200419.002.WW_Phone-17.0823.2007.58
3. Rooted or not: no
4. Frequency of Occurrence: always
5. APP Name & APP Version (If your issue relates to the app):

In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.

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VID-20200917-WA0021.mp4

See how the black color eats up other colors at low brightness

This note may help you

And maybe not

gfg59204

VID-20200917-WA0022.mp4

VID-20200917-WA0023.mp4

Screen in slow motion at high and low brightness