Make sure that your images are optimized for the web. Also, try not to upload images that are larger than needed. The image should not be larger than 670px. You can also use a tool such as Photoshop in order to optimize the images and reduce the size.
If you use several plugins, then the website will slow down. If this happens, then disable all the plugins and clear the browser cache. Afterwards you can re-enable the plugins and check the site speed at every one of them in order to see which one of them is.
3) Disable the features that you’re not using in theme options
We offer plenty options in order to disable features in Avada-Theme Options-Extras tab. If you don’t use them, try to disable them.