Ring pro talk feature not working

Having some issues with my ring pro. Video works just fine. And incoming audio. As soon as I try to speak to someone at the door it drops all internet connection. I have upgraded my router. Got faster internet at 500mbps. WiFi repeater right behind the ring. Even upgraded my doorbell transformer from the 16v/10va to 24v/40va and the issue is still there. I’ve spent so much money on the ring and all the stuff that has been recommended to fix it. Just to have the same issues.