The sending and the receiving network path are different. It is quite possible to have packet loss issues in one or the other directions, or both.
There are other things which can impact it, but I assumed it as working at one time. If it has never worked, then you could be looking at impedance mismatches with the microphone and recording port, assuming it is connected to a sound card.
Could be the recording gain is too high causing distortion.
If you are recording through the USB port and have another high data usage device connected to the USB bus, it could be interfering with the microphone.