Sounds are too quiet or non existent

Anyone else experiencing this? Enemies shooting me from 10m and I cannot hear them(no, they aren't using suppressors). Can't hear tanks rolling up on me, enemy footsteps, etc, etc. Started before the big content patch but the audio was fine at launch. Running a Schiit Modi and Magni with Hifiman HE 400se. Audio works perfect in other games and videos. Is this a known issue or any known fixes?