So I'm wondering if the lore around suspension, dissociation, and the simulacrum makes any sense now. If the operating system environment exists in part so that the Voice isn't so loud, why don't they just stay there the whole time? Maybe it has something to do with the alteration of time perception. Honestly this is a nut I never did crack to my satisfaction. I've still got a whole Obsidian canvas filled with questions about it.
How do people “re-associate” for lack of a better term? There was that one Reddit story about a guy who lives an entire life in a coma until he sees a weird-looking lamp. That's one possible way. They're just living their life until they see something that's not quite right. It leads them down a rabbit hole of digging around trying to reproduce what they saw or uncover more glitches until they finally “wake up”. Then the process starts over again.
Then there are Immortals. They're suspended, so logically they should eventually dissociate. Maybe they get around this because the sim is the actual sensor feed from the mech, so the reality they think is real is actually just reality.