Screen refresh error?

Hello Guys,

I am using a Lenovo Y520, 1050 GTX (466.11 driver) with all latest drivers installed

Every few minutes the screen background changes to have white lines, dots
The error comes randomly and goes away if cursor is moved around the page, but it comes back shortly again

Brave Version( V1.23.71):

The error is not occuring in any other application.
Please check attached picture for screenshot.

Thank you in advance for looking into this.

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