Myself and others have noticed that all audio in game sounds muddy, bottom heavy, and lacks the crisp high tones almost like the "in space" low-pass filter was mistakenly triggering at all times.
Tested it through a razer headset, tv speakers, and soundbar - results are the same. Everything sounds muddy. Enabling and disabling 3D audio and messing with the Playstation settings nor the games settings seemed to have any effect on the mix.
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Same on Xbox Series