You have given only 2 perimeters at 0,40 mm extrusion width.
To print a overhang it needs always to cover the cale going outside with perimeters what hold contact with the perimeters of the previous layer below.
Next, with a layer heigth of 0,20 mm you never can follow the pitch of this small hole when it reaches in higher region.
I would use support, 1 mm resolution, 2 layer separation up- and downside, 0,8 mm horizontal distance.
Otherwise try 6 or 8 perimeters, 0,10 - 0,12 mm layer heigth and minimum 0,48 - 0,56 mm extrusion width.