hello John
3) also possible:
In the postprocessor used, change the value for Minimum Arc Length to a larger value.
By default, the value is at 0.0001
Try 0.001 or if this is not enough 0.01.
If arcs are shorter than the specified value, a short straight line is output instead.
If the control software cannot work with these short arcs, these circles are created instead of the arc.
Don't forget to save the PP and do a reload.
ralf