Finder performance

The Finder is very slow on big patch constellations.
Right now, it seems to

  • rebuild the entire graph every time you open Finder
  • not search very efficient inside the graph (typing “< something” causes a three-second delay on every single letter for me)
  • draw the complete "< " graph very slow

Would be great to see some performance improvements there, at least at the second point (probably there can’t be much done about the first and the third).