What are the most important settings to configure in a Cloudflare WordPress cache plugin for optimal performance?

Key settings include: 1) Caching Level (typically 'Standard' or 'Aggressive' depending on your server capabilities); 2) Browser Cache TTL (Time To Live) - set a reasonable value to leverage browser caching; 3) Page Rule Configuration - define which pages and content should be cached and excluded; 4) Browser Cache Preloading - enable to proactively cache assets for returning visitors; 5) Cache Lifespan - how long content stays cached before being refreshed from the origin server; 6) Disable Cache on Post Updates - prevents cache from being invalidated with every small update.