Free Palette Auto-hide Speed for AutoCAD and Advance Steel

From the Autodesk App Store:

With this app you will be able to change the time it takes to show/hide or roll-up/roll-out the palette windows in Autodesk® AutoCAD®.

You can see the effect with palettes like Properties, Quickcalc, External References, Sheet Set Manager, Markup Set Manager, Shared Views and Visual Styles Manager set to auto-hide.

Here is when Roll-up and Roll-out are set
to 0 to speed it up as much as possible.

How it works with Roll-up set to 0

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