gregrebholz/Marlin — pull request #1 by marvinstuart (2014-10-08 13:30:25+00:00)
Title: Update Configuration.h

If you follow the 20% - 30 % rule of thumb, meaning if you print regularly at 60 -70 mm/sec then your XYJERK value to between 15 - 20 .So 5 is incorrect and choking the printing speed.