Hello, bobcat38.
Thank you for using Apple Support Communities.
If you're experiencing issues on FaceTime Audio calls, try the steps in this article which may help: If FaceTime isn't working on your Mac - Apple Support
If you need help with your connection or call quality
A slow or busy Wi-Fi network might cause issues with your FaceTime call. If you experience connection alerts or low-quality audio or video:
•Make sure that you and your recipient have a fast Wi-Fi or cellular connection. FaceTime calls over Wi-Fi require a broadband connection.
•Check for issues that might be slowing down your connection, such as someone streaming content over your network.
•If you have questions about your Internet speed, contact your Internet service provider.
If these steps don't help resolve the issue, contact Apple Support for further help.
Cheers!