Question / Help Double Voice ( robot voice ) while steaming

Hello I am using elgato hd60 pro and PS4 with Astro a40 headset for streaming I use obs studio and an extra rode usb mic

I have connected everything correct with Chatlink Kabel from elgato
I don’t have any other loops from game or anything else
I only have my own voice doubled
It is gone when i mute my Astro a40 mic
But I can’t mute my self when I am playing with friends
Is there any solution for me ? Normally my voice should not be recorded from ingame PlayStation network party
Sry for my bad English I am from Vienna Austria and we speak German here
So if u can answer in German pls do ^^
I need really help it kills my stream
Everything is working only this little problem sucks