Limiting mode amplitude detection for the γ Dor sample (left panels) and the SPB sample (right panels). Top and bottom panel show the lowest mode amplitude detected for each star of the simulation batch AFFOGATO and CORTADO, respectively. The data points are colour-coded after camera visibility. The dotted horizontal lines are 10 ppm reference lines to compare the two batches. The dotted vertical line in the bottom panel marks a transition between a noise floor plateau (left of line) and an increasing detection limit.