Thank you for the input, but I’ve already tried to disable “Acoustic Echo Cancellation” with no luck.
Any existing option to disable automatic gain, sensitivity, noise reduction, volume normalization etc. is also fully exploited in control panels for sound card drivers.
I also looked at the site you linked to, but I must admit that I’ve have a hard time accepting my problem originates from another source than the Speech Engine or VA and I honestly don’t know where to start looking for this problem.
I would be very interested in knowing if other VA users have a similar setup working correctly?