The sound of the system is duplicated through the microphone.?

Question

Audio

Good afternoon, habrachans.
I already exhausted all my acquaintances, I worked in the service myself, but after a week of torment I still didn’t find an answer to the question, so the question itself:
There is ASUS Xonar SE, built-in Realtek HD, Steelseries Arctis Raw headphones via a 4pin> 2x3pin adapter connected to ASUS Xonar SE.
Problem: During a call / microphone check - my system sounds are heard. (I think it’s not worth specifying that shooting in the game really interferes with my comrades)
Work done: Replacement of headphones with completely different ones, twice replacement of a 4pin> 2x3pin adapter of another brand. Reinstalling the system, disconnecting the front USB, disconnecting the front audio jacks, disassembling the system unit and starting the motherboard outside the case. Disabling an external sound card, disabling the built-in sound card through the BIOS. Reinstalling drivers, installing old versions of drivers for Realtek and ASUS. Disable sound effects in Windows Settings, Realkte, Asus Xonar Utility, BIOS update.
The problem started a month ago, people in the discord started complaining that they heard shooting from me. Google did not help, I have already reviewed all the videos on this topic.

I attach a screenshot of the iron
https://imgur.com/a/3q0jylW
Video with the problem:
https://streamable.com/nrar8u

Answer 1

I think the problem is in the hardware - in the hardware there is hardware switching of the output to the input, and purely theoretically it could fail. Try it without plugging in your headphones. In the end, you can put a USB sound.