One app, watched closely. Zoom ships updates that quietly move audio settings, and every fix on this site depends on those menus staying where we said they were. The desk log is where changes get recorded first — dated, with the affected guide linked — plus the occasional experiment that is too narrow for a full guide.
Desk log entries
Zoom Audio Cutting Out or Choppy: Network, CPU or Settings?
Zoom Personalized Audio Isolation: Setup, Voiceprint and Limits
Echo on Zoom: Locate the Loop, Then Fix It in Order
Zoom Microphone Not Working: The Full Diagnosis, Rung by Rung
The Two-Minute Zoom Audio Test That Catches Real Problems
Zoom Audio Not Working? Fix It in the Right Order
Zoom Background Noise Suppression: What Each Level Really Does