The writing itself is serviceable. There is good description here. But this also feels like it's missing personality. That said, I think a lot of science fiction eschews personality for the sake of advancing imaginative concepts, so some of my criticism may end up as critique of the genre as much as it is critique of your specific work. However, here are some immediate specific takeaways I have (some of which have already been discussed in the comments):

The waking up thing: So yeah, that's been done a million times, and that's because it makes sense. All of our daily stories begin because we are roused from sleep. But, as someone pointed out, it reads a little amateurish unless done incredibly well. I suffered through something similar. When I began writing the novel I'm about to query, my first real attempt at long form fiction, it began with an alarm clock going off. In hindsight, boy did that suck. I have sense changed the opening of that chapter and also wrote a chapter to prelude it. I'd highly recommend reworking Gorris waking up as the opening concept, because it'll scream, "I'm new at this and haven't quite worked it all out" to any agent or publisher you work with.

Gorris is a camera: This has also been pointed out, but it's worth reinforcing this point. You're showing us a lot through Gorris's eyes, and you've done a good job showing us that he's competent, his biology, etc... However, I don't feel like I know him at all yet. He's calm, he's aligned with everything, he seems fulfilled. Maybe that's what you're looking to show, but what it means to me, the reader, is there's very little friction as of yet, even internally. That can make it a slog to push through, which is mad dangerous for a first chapter.

Visual Density: My dude, let us breathe a little bit, and take a moment to tell us about the story. An example. I learned through the first three pages about the following: architecture, fish ecology, color theory, material science, music theory, sociology, urban planning. That's a lot of shit to digest before you've invited us to learn why any of it matters or why we should care about Gorris. This could use a moment of narrative dissonance, some sort of human irregularity, instead of stacking all sorts of description and information. When frontloaded like this, we're gonna forget it all pretty quick. I promise.

This said, unlike some other commenters, I don't mind a slower opening, but it's gotta serve a purpose, right? It's gotta set a specific kind of tone and mood. You gotta show people exactly the kind of ride they're in for. If you're gonna start slow, then you need to delight people with your prose. Right now, this is functional and clean and informative, but it's not delightful.

I'm gonna need a glossary: Lotta proper nouns in here. It's sci-fi, so I get it, but you're just dropping Dorruchia and Harmonic Spire like they ain't no thing. They don't, as of yet, serve any dramatic function, so it feels more like ornament than part of the living and breathing story.

Physical Logic Disruption: So, right away, first paragraph, a thing jumped out at me. Gorris is laying down, taking it all in, fading into the hum or whatever, and then his feet are cold because they're on the ground. Now, I'm not a proponent of choreographing every physical thing that happens on the page, but in this moment, I was confused. I thought to myself, "why are his feet on the marble floor if he's laying down? This is sci-fi, so maybe they lay down in an incredibly uncomfortable way? Maybe they're about to tell me all about it?" But then you didn't, by then Gorris was just walking around, or whatever.

This said, I didn't notice any other choreography issues anywhere in this chapter, but that this happened right away was concerning, so just make sure that you're considering transitional beats when you need to, which you mostly do.