[cs02rm0]

I'm not sure it's bandwidth and not just that they're not muting their microphones while he talks. Either way, the experience is terrible.

[kzahel]

Seriously. Manually mute your mic. This applies to everybody who uses hangouts or conferences with anything, ever.

[dublinben]

It also makes a big difference to use a headset or headphones so the other person's audio is directed into your ears, not played out loud.

[JTon]

Most gamers I know do this via talk-keys. Very handy.