Holy Mamma, I just flew past my original Multithreaded increase of 155% in ZBrush 3.5 by looking at the “Preferences>Performance>Multithreaded Steps”.
For some reason, it was set to 2. The default should be 6.
I set it to 6 and did the Multithread Test again and…
Multithreading resulted in a 243.00% speed increase.
(versus my 3.1 increase of 59.79%) (so 4x faster now)
Again, Pixologic, you. frakking. rock.