I have Sony WH-1000XM3 Bluetooth headphones and they are cutting out frequently when I'm more than 1m away from my Mac Mini 2018. Disabling WiFi on Mac helps a little but the problem still persists.
Bluetooth – How to Fix Cutting Out Headphones on Mac Mini
bluetoothheadphonesmac-mini
Best Answer
Actually, what helped me was this thread.
I have a USB hub connected to my Mac, after wrapping all the cables in the aluminum foil, the problem was solved!