I found the problem, but it might not be the fix to a recently occurred problem (no thanks to anyone).
Personally, I still think something is wrong with my speaker, but I what I did to get that annoying sound off, was to reduce Microphone Boost, I had it at +20dB, reduced to 10, and I could...
I can't find any relatable problem to mine, because if someone has a problem, then usually it's regarding some crackling and popping sounds, or just high pitches that are differently described as my issue, so I couldn't find relatable issue.
I got an Logitech Z523 audio system, I do not use any...