I'm using Version: 2.0.1 QCustomPlot for plotting data read from files and data arriving from a remote system by net. When mLineStyle == lsImpulse performance get dramatically lower and application result unusable.
I've found out in drawImpulsePlot it is used the function

painter->drawLines(lines)
while replacing it with
drawPolyline(painter, lines)
it works good and performance issues disappear.
I don't like to use a modified version of a library so I was wondering if it changed in the later versions and why it was invoked drawLines instead of drawPolyline.

Thank you