Firefox keeps adding sliders to volume mixer
I am running Win 10 64-bit, with Firefox Browser v 103.0.
For a while now, Firefox does not close the last instance's volume slider in the volume mixer screen (sndvol.exe)
I have researched extensively but have been unable to fix the issue. The last resolution came from Mozilla Help, suggestion I untick the "Use recommended performance settings" under Settings > Permormance.