Artifacts when viewing photos and editing videos on macbook pro 2010. What could be the problem?

Question

macOS

Artifacts appear when viewing photos and editing videos on macbook pro 2010.
During normal work, they are not observed. After opening the photo, the photo is normal for 1 second, and then artifacts appear in the photo area.
Artifact example.


An interesting case: I edited a video on this poppy, after exporting I received a file with artifacts. which could be seen on any computer)
What could be the problem?

Answer 1

in anything. for example, in video memory, if this software renders on the GPU.

Answer 2

I had this back in 2008, when I connected defective GeForce 6200 pipelines. So I would look at the video card.