The definition of a "better" setting depends entirely on the application (Roughing vs. Finishing).
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When 8901=2, the CNC analyzes the interior angle of a corner. If the angle is acute (< 90 degrees), the control automatically reduces the feedrate in anticipation. When 8901=1, the machine often slams into the corner, deflects the cutter, then speeds up. The definition of a "better" setting depends entirely