Anyone else reporting sound being really at its lowest.

Speakers set on 75%
internal volume set at 80%

Damn.

i guess the game is not optimized for alc1220

Just installed it and verified though galaxy with all 5-DLC. Audio sounds fine for me. Realtek HD Audio going though a small amp set to 25% windows set to 50% performance mode (no software enhancements, no EQ) this is how i play everything and my levels sound the same as every other game.

when i bypassed the amp and used my soundcard directly i had to bump volume slightly, but thats normal. I heard nothing different, softer, then any other game... BTW this game looks insanely beautiful!