Fixed. Just played a few minutes and the performance isn't as abysmal as I was expecting. There is some serious stutter, to the point that it is unplayable but aside from that I'm getting over 60fps (granted, that's only on the first planet and straight after leaving it). That said, the game doesn't look particularly good at all. The textures are grossly low resolution and the default FOV is extremely restrictive (I haven't tried the others yet, you need to quit out of the game to change it!). There might be some beautiful worlds in there but my starting planet was an ugly bogey-green with some truly weird creatures roaming around. It did not give the best first impression of the visuals.
About twenty minutes in and the game is already feeling a bit grindy. It look three minutes for the inventory system to annoy me. It shouldn't take that long for a game's annoyances to become apparent, and it doesn't bode well for things down the line. Even if they fix the technical issues, I'm not sure it is for me but would love to give it a fair few hours at least.