During the dialogue with Karlach with Wyll in the party, selecting the 3rd dialogue option results in no blue tadpole effect (visual and sound) while the characters squirm about.
[Linked Image from i.imgur.com]
[Linked Image from i.imgur.com]

The effect shows up with the same narrator dialogue and character motions if you choose the first dialogue option.
[Linked Image from i.imgur.com]
[Linked Image from i.imgur.com]