The video on the laptop in YouTube at 1080 is fuzzy. The same goes for live broadcasts. How to fix?

Question

Video

Notebook Notebook Asus ROG Strix G17 G712LU-EV013. Everything is fine in games, but when viewing fuzziness and sometimes on a black background, you can see ladders.

Answer 1

Youtube saves bandwidth and applies compression. On dynamic scenes, this results in such JPEG-like artifacts. Set the quality to 4k or 8k on Youtube or download 40 gig blues, they have a better picture

Answer 2

There can be a million options. Including the standard cant of fast matrices when displaying compressed video.
But the first thing that comes to mind:
Discrete graphics work in games, but when watching a video, most likely the laptop switches to an integrated chip.
Therefore, the difference is due to the output of the image from different sources. Does the laptop have the ability to force only discrete graphics and check with it in the same modes.
Try to connect an external monitor and play the video. If the external norms, then the problem is in the matrix or matrix driver. Find a screen driver or resign yourself.
To begin with, these options can be considered