Well I decided just to order razer headphones with 2.4 dongle.
But while trying to find an answer I found a thread in Reddit -
And as I understood, modern Bluetooth 5.2 has enough bandwidth, but not every bt headphones support it, and also there is a problem in Windows and codecs.
And the funniest thing for me was an information on Sony's page - you can enjoy best quality, but if you wanna talk switch to headset and if after that you are not pleased with quality of music just switch back to headphones)) 350 euro headphones, that's sad rly
And I tried everything, many hours like a maniac I've checked different headphones, different Bluetooth adapters, different laptops and pc.
I've changed drivers, settings in discord or teamspeak. Last thing happened I've noticed that when you open windows sound settings while music is playing, a playback tab is opened and everything is ok, the moment you switch to record tab - music shuts down. It is playing but with no sound. You switch back to playback tab - you hear the sound again.
That means that whenever system refers to headset for microphone it automatically switches playback device to headset. After that you only have to choose headset as the playback device in application that produces sounds. Everything works, but in LQ. No way you can use headset for mic and headphones for playback.
I couldn't solve this, I even tried to change drivers for headset, so it could be recognized as average microphone - it didn't work.