NO program I have ever used had the problem that sound got distorted by increasing the volume.

Teamspeak 3 is so quiet for me that I have to turn EVERY other program (youtube, games, music) down to 1-3% volume to still understand others talking.

When I turn the general voice volume or individual client volume up though, it will distort the sound.

Why is that, and how can I fix it?

(windows 7 pro)