We'll create fresh WordPress site with Cachebuster installed. You have 20 minutes to test the plugin after that site we'll be deleted.
This plugins appends the file modification time to style and script URLs, so that changes are effected immediately, even if the theme or plugin version is not changed.
It will not slow down your site because resources are only reloaded when they change.
Attributions: The plugin logo icon is by Chanut-is-Industries.