Matlab GUI windowButtonMotionFcn slows down when number of GUI object gets larger

I am now programming a Matlab GUI for accessing current point of cursor on an axes whenever user changes the location of cursor. However, I found a strange phenomenon that the speed of windowButtonMotionFcn got slower with an increase in number of GUI object. Below is the result

I set the properties of all GUI objects as default value and my operating Matlab version is Matlab 2012a. Is there any possible way to keep the speed of windowButtonMotionFcn when number of GUI object increases?

Thank you for your attention and help. Myrick

Answer 1

[Aditya Apte]

I observed similar slowdown while getting the 'currentPoint' from an axis. The callbacks get slower as the window size increases. I am using Matlab 2015b.