Mac OS Catalina - Bluetooth audio output issues (WF-1000XM3, Bose QuietComfort 35)
Forcing headphones to use aptX codec fixes the issue.

How to change it?


Head to https://developer.apple.com/bluetooth/

Download additional tools for Xcode (you might need to sign in with your Apple ID)

Open downloaded image and open Hardware folder

Move BT Explorer to your application folder and open it

Select Force use of aptX

Disconnect your headphones and connect again
Hold OPTION/ALT key and click on BT in the menu bar, find your headphones, it should show Active Codec: AptX

From my experience this should fix the issues.


Edit: Some people reported that disabling Ask Siri reduces the issues as well.