I noticed that the latest Shinobicharts premium v2.91 works without any issue
in iOS 8 and 9; however, when running in iOS 10.11 in iPhone 6S and iPhone 6S Plus, the performance is horrible.
Debugged found that, it mainly caused by either
axis.setRange(zoomedXRange, withAnimation:true) or
Chart.redrawIncludePlotArea(true). When panning charts,
my old codes would freeze the system.