Problems with sound delay after sharing my screen

If i host a meeting without sharing my screen everything goes ok. However, if I share my screen, after a while the sound starts to have a significant delay (several seconds) causing the meeting to become totally unpractical.

I then need to stop the meeting, relaunch it again, and everything starts to work ok again (unless I share my screen again...).

Does anyone know why this happens and what I can do to avoid this?

Thanks,

Paulo