How Visio slows down as more shapes are added
As more and more shapes are dropped on a Visio drawing the program gets slower, ok, this only becomes noticable with
hundreds or thousands of shapes but here is an attempt to show this:
I created a Visio VBA macro that
- noted the time (a)
- dropped one shape at a time onto a page at a random location
- noted the time (b)
- saved the time difference (b-a) in a file (testdata.txt).
This file was then plotted in Excel (number of shapes so far against time in milliseconds). As can be seen from the
graph below, the time to drop a shape initially is about 400mS but is near 1500mS at 300 shapes.