Video goes black when participant speaks in Zoom

When a participant in your Zoom session speaks, there may be a bug in the Zoom client that causes their video feed to go black in the Zoom app. This is due to a bug with Zoom. This can be fixed by disabling the "optimize quality of the video I receive with super-resolution" in the advanced video settings in Zoom.

Open Zoom Settings
Click "Video" in the left vertical navigation
Select the "Advanced" button in the video settings
Uncheck the box next to "optimize quality of the video I receive with super-resolution"