I have a strange, very distorted echo in my sound in teamspeak3 (v3.0.5) on linux (Both, playback (the text-to-speech voice for example and recording form my mic). I tried both ALSA and pulseaudio, same effet on both.

Playback seems to play everything twice, very distorted.

When recording it echoes endlessly, first what I said, very distorted already and deteriorates, after a couple of repetitions it ends up in a white noise kind of sound.

The interesting part is that my sound works flawlessly, but as soon as I start teamspeak, this effect seems to happen to every sound played on my system while teamspeak is running. The effect ends as soon as I shutdown teamspeak. It also starts as soon as I connect to a server, but does not end after I disconnect until I completely shutdown teamspeak.