title: GraphViz Dot very long duration of generation
body: <p>I have a tree structure I want to be generated by Dot. Each node has 4 edges to another 4 nodes. In sum there are about 1,000 nodes. If I try to generate it with Dot it takes a very long time (once I let it work like for a hour - CPU usage was 100% all the time but it didn't finish). Is there a way to accelerate this? Maybe by setting down the quality? Or using another (faster?) vizualization software? I've attached my Dot file for you to test it on your own machine.</p>
  
  <p>Thank you.
  Dot File: <a href="http://lh.rs/3fmsfjmbvRw2" rel="noreferrer">http://lh.rs/3fmsfjmbvRw2</a></p>