Somone in the subreddit of SOMA says the game is not that great optimized

[private23]

I doubt it is anything but the (near) final version of the game. Hate to burst your bubble dude.

Yup, it might not be the full game, but it's still a part of the finished version nonetheless. (Sure they're still tweaking bugs but that doesn't affect the game as such.)

Here's to hoping the final release version is smoother then.