Call quality - Latency/Delay



I have the Pioneer SPH-DA120 in the car I just installed. It came with a microphone (from Crutchfield, not Pioneer's box).

I am having an issue where I speak on a phone call, and there is very noticable delay until they hear it then respond. Kind of like when the news guy at the desk throws to the reporter in the field and the guy in the field is listening to the desk guy for like 2 seconds bc of the lag, then starts speaking.

What do I do to correct this? There are no "microphone" settings on the head unit like gain, etc.