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Precision 5530 Color Banding (posterizing)

I have a problem with internal screen (4k) all the blacks are pixelated and crunchy.

the same problem that has XPS 15 9570 as described in this topic https://www.dell.com/community/XPS/XPS-15-9570-Color-Banding-issue/td-p/7362458/highlight/false

I had BIOS 1.13 and all latest drivers. To temporaly solve the problem i installed BIOS 1.5: Color banding dissapeared, but fingerprint sensor stops working and there are screen blinking time to time.

DELL Support, when this problem will be solved in what bios versions?

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