nvda

df4b0ae2 - Fall back to Microsoft's own dynamic ducking, and disable our 'always ducking' mode, for Windows builds 14986 and up.

Fall back to Microsoft's own dynamic ducking, and disable our 'always ducking' mode, for Windows builds 14986 and up. As this is hopefully temporary, the quickfix solution is to force usage of our own 'always duck' mode, which allows microsoft to dynamic duck how ever it likes. Fixes #6684