What is the wall of crashes?
Are you telling me that the game crashes after some distance? so... the freedom in this game is restricted?
It might depend on your computer. It might just be certain parts of the galaxy. All I know is the guy who went to the center of the galaxy had serious performance issues at about 13,000 ly, while I just crashed when I got that far. Every ten tries or so I could get back into the game to jump again, only to crash again. I'd hoped it was just a few star systems, but it wasn't. Tried it on both my laptop and desktop, to no avail. After about 6-7 jumps, I turned back. Took me like, a hundred or so restarts to get past the crashes, but I made it out. At the moment, yeah, I'd say exploration is limited. But it takes several days of constant play to get that far away, so you don't hear about it much. Hopefully they'll fix it in the future.
Just beware, if you go too far out, you might never make it back with the data.