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If I understand it correctly the pathpilot tolerance for path following defaults to something like .005". So setting G64P0 effectively (I don't have a system up to test at the moment so going by memory) tells linuxcnc to go as fast as it can while touching every segment.

A quote from the LinuxCNC pages- is this perhaps outdated or are Tormach implementing this differently?

G64 - (Blend Without Tolerance Mode) G64 is the default setting when you start LinuxCNC. G64 is just blending and the naive cam detector is not enabled. G64 and G64 P0 tell the planner to sacrifice path following accuracy in order to keep the feed rate up. This is necessary for some types of material or tooling where exact stops are harmful, and can work great as long as the programmer is careful to keep in mind that the tool’s path will be somewhat more curvy than the program specifies. When using G0 (rapid) moves with G64 use caution on clearance moves and allow enough distance to clear obstacles based on the acceleration capabilities of your machine.

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