The start position that is automatically calculated by the software depends on the Cut Angle of the wire path.
If the Cut Angle is 0, the start point of the cycle is at the bottom left.
If the Cut Angle is 90, the start point of the cycle is at the bottom right.
If the Cut Angle is 180, the start point of the cycle is at the top right.
If the Cut Angle is 270, the start point of the cycle is at the top left.
The chosen angle can naturally lie between the examples shown above. In this case the start point is set to the nearest of the positions shown. On extremely complex contours it may be necessary to experiment with the cut angle to find the optimum start point.