You can download the plugin here;
www.mediafire.com/download/skjz15jcb93ju0a/ScalabilityUIPlugin_v4_4_1.zip
And you can contribute to the source code here;
github.com/Teddy0/ScalabilityUIPlugin
It will pop up this window when you start the game (but not the editor) and allow users to lower graphical settings to help them hit 75 fps.
Pixels Per DisplayPixel: adjusts the resolution, and has a dramatic effect on performance.
Anti-Aliasing: Lowering this to Low/Medium will help performance at high resolutions
Post Processing: Lowering this to Low/Medium will disable tone mapping and bloom, both of which have a high impact on performance
The rest are pretty self explanatory.
You can change the banner image by replacing this file;
Plugins\ScalabilityUIPlugin\Resources\Banner.png
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Aun no he podido hacer pruebas para implementarlo en las demos, pero lo dejo en el foro por si alguno quiere trastear hasta que me ponga con esto.
Saludos.