I still have audio on my FW16… Make sure you’re disabling the right device and have the entire driver bundle installed.
In Device Manager, switch to view devices by connection (View > Devices by connection), then disable the device at the end of this path: /ACPI x64-based PC/Microsoft ACPI-Compliant System/PCI Express Root Complex/PCI Express Root Port/AMD Audio CoProcessor/AMD USB Audio Device. Leave the other audio devices alone, and you should be fine.
