Old video demonstrating the effect of just changing the ballscrew pitch on a small router of mine.
less than 10 IPM (4.2mm/s)
10-50 IPM (4.2 - 21 mm/s)
50-100 IPM (21-42 mm/s)
100 - 300 IPM (42 - 127 mm/s)
300 - 600 IPM (127 - 254 mm/s
faster than 600 IPM (254 mm/s)
Old video demonstrating the effect of just changing the ballscrew pitch on a small router of mine.