I've been having this problem when I play a game with my friends there's an echo. some nights it's not so bad and others it's really annoying. It always happens when we play. There's 3-4 of us who play consistently.

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We've gone through all of the settings. I use a headset plugged directly into the monitor, and an external USB mic for the ps5 (this problem has happened even when I didn't use the external mic).

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the other guys all use headsets plugged into their controllers, and their headsets have mics.

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if there is 2 of us the echo is low, but the moment a 3rd person joins in the echo gets much louder. No matter what I do I can't get it to stop.