Problems With Sound on GTA Expanded & Enhanced Version.

[Calv!n]

There has been this problem in the game for me for a long time. Whenever I use my surround sound speakers, the game's sound does not work properly, and only seems to work on headphones. So, when I use my speakers in the game, everything around me is for some reason louder than the car that I'm driving or the gun I'm shooting.

Even the people that usually call you on the phone when you get in the game don't have sound. This wasn't a problem in the older version of the game. The NPC's that are on the sidewalks, the cars that go by you while driving or walking, all sound so loud. Meanwhile, I can't hear the phone calls, my weapon sounds are glitched out and are very silent for some reason, my own car exhaust or sound is very small and weak, and many more sound problems occur when I'm not using the headphones. When I am using headphones, everything works just fine. I've tried to find some settings to change the audio quality or sound settings, or something like that, but the new version of the game doesn't seem to have those options anymore. Can I please get some recommendations or help on this? Help will be greatly appreciated. 

[Spider-Vice]

There seem to be some audio mixing issues with this version (including on consoles) which people have been discussing here extensively, check this out in the GTA V section