I don't know when this happened because i haven't played doom in a while, but I just realized both Zandronum and GZDoom don't have positional sound (for example, if an enemy shots on my right, I should hear the shoot on my right earphone, but I just hear it all in mono)
I've checked the sound settings and it was at the default "auto". Tried "stereo" same thing.
How do I fix this?