Thanks for the feedback. The level for this demo is shorter and simpler than ideally we would have liked, because time was short, but hopefully it managed to give a bit more sense of the "exploration" gameplay that we want the game to offer than a pure tech-demo would have done.
Movement in a game like this feels like it will be the most straightforward thing to implement, but then the deeper you get into it the more decisions you start having to make. We'll definitely be looking to tune it as we continue to work on the game, and hopefully can dial out whatever is making it feel "floaty" to you.