If it was good and now is not, it seems to me that something
might have changed the properties of the recording volume for the
selected microphone. You might want to check in the Control Panel
> Sounds and Audio Devices > Voice (tab) to see if turning
down the voice recording volume will help.
I know you said you had turned down your mic level, but you
didn't say where, or on what device, so it might be worth a look
... just a thought.
.