I've tried playing again since your updates, and I can play in an area now without lock-ups. I also noticed that the options have graphics settings; I turned mine down to Good. I appreciate your attention to getting the game to work for lesser machines like mine. :D
The game looks fantastic all around, and the music enhances the experience nicely as well. The HUD gave me enough to go by to open the options screen and see the controls; I appreciate that. I knew which key to use to salvage, but... I didn't know where to go or what to look for to find salvage. I headed toward a frame of cubes with pipes in them, looked around and on them, inside the pipes, but my oxygen was down at emergency levels and I'd still found nothing that responded to my attempts to salvage. I'm going to have to say it: your game needs a tutorial.
Another little question: in the area selection screen, money steadily counts down. I can only guess this is a deliberate gameplay mechanic, but my question is, why?
Anyway, more important thing is I don't know how to salvage, I don't know how to learn how to salvage, so once again, it feels like a game I want to play is evading my attempts to play it. Please help when you can. Thanks!