Contrast gain as a function of angular separation in the DH when the HOWFC loop is slowed down to 0.05 Hz on purpose. Solid lines represent the ratio of the azimuthally averaged contrast between the cases without and with LOWFC. The filling colors show the standard deviation of the measurement. The dashed horizontal line is drawn at a gain of 1. The blue curve represents the gain between the values of the intervals (0) and (2) over the values of the intervals (1) and (3). The yellow curve corresponds to intervals (4) values.