Toggle / Show / Hide for stacked bar chart with 60 items in each bar very slow

I've got a stacked bar chart that has 60 elements in each stack. I toggling on/off all of the the chart elements via:

```
chart.toggle(arrayOfElementIDs);
```

so they can be individually analyzed.

It works, but takes ~15 seconds to deselect/select all 60 elements. Any idea how can I speed this up?

What additional information can I provide?

Scott