The sound made by a harasser driving is using a mono not stereo setting, so you can not tell what direction the vehicle is in game. This has been an issue for over a year, I posted here, I made in game reports, and I made an issue tracker ticket many months ago. I am reviving this issue because it's such a basic thing and nothing has been done. All the devs have to do is change the sound script code from mono to stereo, it's the most basic thing in any game. I can't believe we are several years into this game and this bug still exists. Please fix this devs!
