General site speed depends on many factors. Below you’ll find main of them:
– Caching. The most important part of optimizing your site is caching. Combine cached page with gzip compression to get better results. Try to use W3 Total Cache plugin. Read the beginners guide to setting up W3 Total Cache plugin https://premium.wpmudev.org/blog/w3-total-cache-settings/
– Plugins. When you have multiple plugins installed and activated on your site, it can slow it down. So, please, keep enabled only those plugins that you really need for the correct functioning of your site and disable all the plugin that you don’t use. The more plugins you use, the slower it will be.
– Images. Use optimized images only otherwise you will have big images and a slow loading time. Do not upload larger images than what is needed. When you use image editing tool like Photoshop don’t save images without using the option “Save For Web”.
There are different ways on how to compress images. Use special services or WordPress plugins to optimize your images for decreased loading times: tinypng.com, Compressor.io, Kraken.io.
– If you are using Slider revolution – https://www.themepunch.com/revslider-doc/performance-seo/ By default, “Include RevSlider libraries globally” option is enabled, please read this article https://www.themepunch.com/revslider-doc/global-settings/ and disable the option in case you are using sliders only inside page content.