walkie-talkie to discord

Damn, I'm worn out already.
who knows what the problem is ...
While the games are not running, the interlocutors hear me well in the discord, how I start the game, it starts during the game ...
Words are simply lost, as if I stutter. I begin to speak loudly - norms. it doesn’t take long. I tried to change the headphones, the same trouble.
Headphones with microphone. Moreover, the incoming norms. outgoing only.
Who faced such trouble, how to solve? I tried everything that came to mind (well, or almost everything).