Since the version 3.5 of Teamspeak, the voice captured is slow and choppy if the microphone used is the microphone array of the Kinect v2 from Microsoft.
I tested with the latest beta of TeamSpeak 5, it’s the same.
With the 3.3.2 version, no problem. With another microphone, no problem too.
I think the Kinect from Microsoft is not supposed to be used as a Microphone on a Computer. The Problem I think is that this Device is officially supposed to work with an Xbox.
Could it be that you have a too low upload bandwith available? you can check the bandwith within the channel settings. (don’t exceed 90% of your max bandwith) ?
Did you tried your Microphone in the Windows settings under
-> Sounds -> Capture -> Microphone -> Listen -> Use this device to listen?