I'm trying the CNC function and found that when using the [outline] command, the output path repeats about 20 times whenever it reaches the inside lines. It won't happen when using "outside only".
For example, if I want to cut two concentric circles, selecting "outside only" will produce a g code that only cuts the outer circle, selecting "inside only" will cut the inner circle 20 times, and If not specified will cut both the inner and outer circles 20 times.
The model imported was produced by solidworks and I got correct gcode with same process several months ago.

Please help, thank you!