Out the Box

A lightweight, easy-to-use slider plugin.
Super Simple Slider’s intuitive interface allows you to create great looking, mobile-friendly sliders in minutes with no coding knowledge required. Just choose your images, add some text, drag and drop them into the order you want and you’re good to go. The button creation tool gives you the option of adding a button to your slides.
<h4>Premium Features Include</h4>
<ul>
<li>Slideshow Mode – Set your slider to automatically scroll by enabling slideshow mode</li>
<li>Instagram Filters – Instantly turn your slide images from bland to grand by applying one of the 40 Instragram-style filters</li>
<li>Multiple Buttons – Add up to 3 buttons to any slide and style them just the way you want</li>
<li>Transition Effects – Choose from one of the 8 slide transition effects</li>
<li>Navigation Button Style – Select the style of your navigation buttons</li>
<li><a href="https://www.outtheboxthemes.com/wordpress-plugins/super-simple-slider/" rel="nofollow ugc">And more</a></li>
</ul>

Super Simple Slider

A lightweight, easy-to-use slider plugin.

Speznat

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.
<h3>HPCSS Slider Installation and Usage</h3>
This Instructions are in Pictures explained but here short in text form:
<ol>
<li>Upload ‘hpcss_slider’ to the wordpress admin</li>
<li>Activate the plugin through the ‘Plugins’ menu in WordPress</li>
<li>Open hpcss_slider and add a slide</li>
<li>insert the image gallery using ‘add media’ button</li>
<li>Select “Create Gallery” on the far left than pick your items and click on save</li>
<li>Take the shortcode from the overview page</li>
<li>Place it anywhere on your page</li>
<li>Add Title and Meta Description to the Images than they will appear. (in the description field of the image you can also ad html)</li>
</ol>

High Performance CSS Only Slider

Its a High Performance CSS only slider, That is Optimized to the Max possible.

Super Simple Slider vs High Performance CSS Only Slider