The mining change seems to have screwed up the pulse wave scanner. I've only tested it for around 30 minutes, but my impression is that the scanner has lost a huge amount of range. Distant asteroids don't glow even faintly, but then suddenly start glowing when you get close (In a fast ship you suddenly spot a core next to you thinking "how did I miss that?"). This has effectively killed core mining for me, as it's makes finding cores much more difficult. Previously, you could spot the right kind of asteroid from a distance with experience, if they had the right (faint) glow and shape. But now it seems to be just flying blindly and hoping one appears in front of you, which is terrible gameplay.