Screenshare problem - desktop and mobile

There is a huge audio syncing problem whenever I'm on a call with a friend who is screensharing and vice versa. Sometimes I would get a one minute audio delay whereas the screensharing part is fine. It makes the call less enjoyable when you don't experience both audio and video in sync with each other. It's definitely not network lag because the audio and video output are just fine. Theres just a huge audio delay. If you can find out the problem with this and fix it, that would be awesome.