I spent some time investigating this today, first off there is no GPU usage in this plugin, also there doesn't appear to be any multi threading when using fast marching (didn't look into KD tree method). My testing used a cloud with ~350k pts I added timers and console statements to see if I could t...
Not that I know of but there is the ability to toggle recursively certain properties toggleRecurive.JPG So for your use the fastest way would be to click into the DB Tree area press "Ctrl+A" to select all, then "S" to turn off scalar display, then "C" to turn on RGB col...
Just as an additional note, you may also want to test whether this is actually any faster for than without Parallel as CC does many of its operations in parallel already, depending on the specific CLI commands this may actually reduce performance as you would have multiple instances competing (maybe...
One way to get diameter would be to use the RANSAC plugin to search for Cylinders, with the right settings I think you should be able to find 2 cylinders, 1 for the inner surface and 1 for the outer.
If you want to post a cloud with just that small section I'd be happy to try it out