The Revolution Slider plugin developer should have coded the plugin to create thumbnails and load the smaller image instead, not load and scale down full size images!
Remember the plugin is called the “Slider Revolution Responsive WordPress Slider Plugin” (RESPONSIVE indicating mobile responsiveness) and is advertised as optimized for performance.
Good looks aren’t everything, so we made sure that
Slider Revolution also loads lightning fast!
- Loaded core file size automatically scales with used features
- Intelligent Lazy Loading options
- SEO Optimization
- Monitor and optimize all aspects of your sliders
- Advanced Debugging Options
As long as users can upload huge images which are scaled down rather than resized (thumbnails created) this is NOT an optimized for performance WordPress plugin.