Using qcustom plot for plotting single sinus period that has large number of points (12000) rise portion of the sinus curve looks lot of tinner than the fall portion of the curve.
Sinus is genetared using 16b DAC and captured using 16b ADC, so some noise is added to perfect sinus curve, let's say +/-5 LSBs of 65535 maximum aplitude, so small amount of noise.

First thought on my mind was, maybe qcustom plot use different algorithm for rising part of the curve (like point averaging) and max pick to pick for the falling part of the curve... but later I realised that even if that is the case, noise added to perfect sinus is so small that should be invisible on my display resolution.

Has anyone nottice such behavioral?