Wie heeft Ik ook gebruikt bij dit onderwerp

Hello,
Hi, I've already searched both the german and english forums but couldn't find any answers to my problem.
First, let me specify that :
-all my drivers are up to date
-all windows updates are installed too
-I already tried all the possible diagnosises in the Medion Service App (they all conclude that my Notebook is working perfectly)

The following issue happens to me everyday : at least twice a day, when I'm scrolling down a page whether it's in a web browser or any another app, my screen begins to flicker like crazy.
See following picture or video on that linkpicture of the flickering, it's like it wanted to endlessly scroll
When it happens, sometimes a have to wait a few second, sometimes scrolling back up fixes the issue, sometimes I have to close the window, but most of the time have a to do a manual restart.

Please help me if you can.
Thx