My friends have noticed that my voice becomes robotic in Discord after playing for more than an hour. I began to realize that this issue occurs specifically when I use Diablo 4 with Nvidia Broadcast as my output device. Considering the presence of background noises such as my child and the television, I hope that this problem will be addressed and resolved promptly. Interestingly, I came across a similar issue being discussed on Reddit as well.
https://www.reddit.com/r/Diablo/comments/144l2la/diablo_4_seems_to_suffer_compatibility_issues/