Screen flickers when sharing but mouse continues to work fluidly on Mac

Good morning, for a few days now, during some long screen-sharing sessions, flickering has been occurring on the PCs of those who receive my screen-sharing (as if old screens remain in memory and are constantly alternating with the current ones), the strange thing is that the mouse and webcam continue to work fluidly.

If I interrupt and reactivate screen sharing the problem resolves itself for a few minutes, but then it recurs.

I specify that I'm working on a MacBook Pro with i9, and I updated Zoom yesterday to see if by chance this was the cause of the problem. (I also deleted the cache folder).

Is there any way to solve this problem?