Hi,

There is an audio quality issue when using a video out format that doesn't have the same frame rate as your project's Frame Rate in some cases.
You can fix it, for example, by setting the video out to Sync. This way the project's Frame Rate will be locked to the video out's frame rate:

We apologize for any inconvenience this issue may have caused. The team is working to address this issue for an upcoming software release.

Warmest regards,