Win11 Bluetooth audio stutters when Wi-Fi is active on 2.4 GHz band

My Bluetooth headphones were glitching, and none of the usual troubleshooting tips worked. What finally solved it was disabling AAC encoding for Bluetooth via the Windows Registry.

Windows tries to stream audio using the AAC codec on bluetooth, but many PC adapters and drivers suffer from chronic sync issues with it. Forcing the system to fall back on the standard SBC codec usually resolves the crackling right away. Here’s how to do it:

1) Press Windows + R, type REGEDIT, and hit Enter.

2) Paste this path into the Registry Editor’s address bar:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\BthA2dp\Parameters

3) If the Parameters key doesn't exist, right-click BthA2dp > New > Key, and name it Parameters.

4) Inside Parameters, right-click the empty space on the right pane, then choose New > DWORD (32-bit) Value.

5) Name it exactly BluetoothAacEnable.

6) Double-click it and set the Value data to 0.

7) Restart your PC.