Shared sound problems on new laptop

[Alches]

Recently I bought a new Asus laptop and I set all the audio and video settings exactly the same as on my HP laptop. Both laptops have the same version of Zoom (5.13.7).  Now, when I play a video, the Zoom participants can hear the sound perfectly from the new laptop, but as soon as I click Share, the video shows perfectly, but the sound develops a crackle after each word. This crackle is also heard on my local speakers, not only on Zoom.  It is most annoying.

Any ideas why this is happening?

Allan