Sets UserDuckingPreference = 3 ('Do nothing') so Windows stops automatically lowering game/media volume when communication activity is detected (e.g. a call). Removes a source of audio volume swings during gaming. Per-user; reversible (exact snapshot).
MaxTweaks applies this tweak with one click and snapshots your original setting first, so you can revert it cleanly at any time. A System Restore point is offered before batch changes, and every tweak links to its official source.
Get MaxTweaksOfficial documentation: https://learn.microsoft.com/en-us/windows/win32/coreaudio/stream-attenuation