I moved from 1.3.2 to 2.0.1 and faced a massive increase of the destructor time consumption.
In my plots I got around 2000 items and while destruction operations like setFillOrder (with rearrange) and add element of the LayoutGrid and Legend are executed and I often pause in these functions while analyzing this issue .
In sum I get around 30 seconds for the destruction of 3 plots.
Are all these operations necessary while destructing the QCustomPlot object. Has anybody a hint how I can work around this?