Thank you fro the update Riardon.

Please let us know if your new idea works.

You have a microphone attached to your PC, correct? Is this plugged in at all times? Have you tried unplugging this and disabling your other default sound device (in your dxdiag labeled 'Realtek HD Audio 2nd output')?

We hope we can be of assistance in helping you enjoy the exciting world of Final Fantasy XIV!