Anyone ever experience Zoom meeting lag that reproducibly connects with receiving a Mac notification?

I've had this issue on my M1 and now my M4 mac for about a year now, and I can't figure it out. Uninstalling and reinstalling hasn't helped.

Literally, someone can reliably send me a slack notification in a meeting (even when DND is on) and cause my Zoom outbound video to get gummed up.

Edit: I ask because I wonder if it has to do with this.