Meeting's audio and video work in jerks every time

Hi,

I usually used Zoom to watch my online classes as a universitary student.

Since several months, I can't follow lessons anymore because audio and video are stopping every 30 seconds for at least 2 seconds...

That's not a problem of connection because I tried also to change it ad it remains.

I have this problem both in the app and using zoom by browser.

I tried also to make some video calls on zoom with my friends to verify if I had the problem only with Uni classes, but it remains also for private meetings.

I don't know where the problem might be, if you have some suggestions, please write me.