Litespeed Cache for WordPress (LSCWP) is a caching plugin created and maintained by the developers of the Litespeed web server we use on all shared, cloud web hosting, semi-dedicated, and reseller hosting plans. The Litespeed Cache for WordPress (LSCWP) plugin has been found to drastically improve your sites performance and responsiveness while reducing the CPU, disk IO, and PHP process requirements for handling high levels of traffic. You can find benchmarks for the plugin here: LSCWP Benchmarks
In an effort to improve customer experience and site performance we will periodically automatically scan and install this caching plugin on customer WordPress sites. The plugin is fully supported with all configurations so it will not cause any interruption to service or conflict with existing plugins. Once installed and enabled you should see a significant improvement in overall performance for your WordPress sites.
If you wish to manually install the plugin for new sites, or disable caching and prevent future automatic installations, please refer to this KB article: Enable, disable, or flag WordPress installations with LSCWP