I've installed Vocalizer and dowloaded english voice. Tts premium high. At first it was useless, every 12th corner it would sound but the words were cut in half.
Then I've played with sys command for 'navigation_audio_stream=3'
It was a long shot, I've tried pretty much everything and lost all hope by now. So for one last try to i've decided to check with all the values 0-5.
2 weeks ago i've already tried with 3 and 4 and it didn't do any good so i wasn't really putting much hope into it. I started from the begining and viola with the first try 'navigation_audio_stream=0' it worked somehow. Tested it, it runs flawlessly, i can listen to BT music it lowers the music when giving commands, pronounces clearly all the directions. So special thanks to Boki_Srb. Hvala brate. After almost a month of dealing with the issue it finally works now.