When I unplugged my headset with Siralim running, the sound in Siralim stopped, and every time I attack an enemy, there is a delay going on. It takes a solid two to three seconds after each of my attacks and casts before the game continues. This does not happen with enemies.
The attack animation also doesn’t play anymore.
It doesn’t seem to resolve itself after a battle, but restarting the game fixed it. It doesn’t seem to matter at what point I unplug my headset.