Why is my Unreal Engine making "black pixels" on shadows?

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I’ve just installed Unreal and all my shadow (mostly hard shadows, it seems) are a bunch of black pixels flickering.

My GPU is a nvidia gtx 1650. I’ve tried changing the scalability Settings but none of them worked.

[My video on google drive]
(2024-01-01 11-34-18.mp4 - Google Drive)