An updated CMS operates more efficiently and requires fewer resources. Removing unnecessary plugins, cleaning up inactive pages and unused content, and implementing caching can help reduce server load. 

Recommendations:

• Keep the CMS updated:
  New versions are often more efficient and secure.
• Remove unnecessary plugins:
  Eliminate outdated or redundant plugins that burden the system.
• Use caching wisely:
  Select a caching solution suited to the CMS to avoid unnecessary server requests.