The 1uF MLCC is recommended for cost and solution size reasons. We can increase the recommended value to 2.2uF because of strong voltage dependency of the MLCCs and loading effect of more end points. A couple of 4.7uF or larger value electrolytic caps would perform the best at 57.6kbps in terms of pulse distortion (the droop on top of pulses). However, the value also depends on the loading. The value varies in different number of end points.