Its a High Performance CSS only slider, That is Optimized to the Max possible.
The CSS of the Slider only gets loaded in if the Shortcode is used on that page, so other pages without that slider dont suffer performance issues.
The CSS is just 2.2 Kb in Size.
In Google Lighthouse the slider have:
100% In Performance
100% in Best practices
100% in Accessibility
and 99% in SEO
How it should be used:
2-5 Images that have the SAME size, the image sizes and repsonsive look depends on where you place the shortcode of the slider.
and they should be in jpg format, for the best performance possible.
Its Optimized for a max of 5 Slides only, dont use more.
Also non minified version of the CSS is in the Plugin folder if you want to Style it yourself, but please use a minifier too.
This Instructions are in Pictures explained but here short in text form: