THE PROBLEM:

This is a problem that anyone that uses discord and TS will probably find often.

I was watcing a video on food's twitch and they were 4 stacking. All talking trough team speak. The solo q that joined them for the match was of course only in valorant voice, so whenever they needed to talk to him they had to push-to-talk in valorant. The problem is that in that moment they had two voice channel open with terrible echo effect.

THE SOLUTION:

Discord (but TS too) have the option to set a Push-To-Mute button. If you set the same button you use to Push-To-Talk in Valorant you activate voice in valorant and deactivate voice in Discord with the same button. This helps everyone ears.

To do that in Discord:

Settings > Keybind > add keybind. And select Push-To-Mute. The button you want to use is the same you have in valorant for Push-To-Talk (probably T)
Now everytime you push T you will hear a sound that alert you the mic is muted/unmuted in Discord. It's terrible. So go to Notification and disable PTT Activate and PTT Deactivate.

For TeamSpeak I know it can be done but you will have to look for it in internet^^.

Hope this is useful for everyone.