If your website loads slowly or takes a long time to update after you make changes, there are several possible causes ranging from browser caching to server-side performance issues. Here is how to diagnose and fix it.
Your browser is showing a cached version
Press Ctrl+Shift+R (Windows/Linux) or Cmd+Shift+R (Mac) to do a hard refresh that bypasses the cache. If the updated content appears, caching was the issue. See Updated My Site But Still See Old Pages for more cache-busting techniques.
01. Browser and Proxy Caching
- Hard refresh - Ctrl+Shift+R or Cmd+Shift+R
- Clear browser cache - Settings > Privacy > Clear browsing data
- Try incognito/private mode - Opens with a clean cache
- Corporate proxy - If you are behind a corporate proxy, it may cache pages for hours. See Proxy Issues.
02. Server-Side Caching
If you use a caching plugin (WP Super Cache, W3 Total Cache, LiteSpeed Cache) or Cloudflare, your changes may not appear until the cache is purged:
- WordPress caching plugin - Go to the plugin's settings and click "Purge All Cache" or "Clear Cache"
- Cloudflare - Log into Cloudflare > Caching > Purge Everything. See Cloudflare Setup Guide.
- OPcache - PHP's built-in opcode cache may serve old compiled PHP. In most cases, saving a PHP file triggers an automatic refresh.
03. Site Performance Issues
If the site is genuinely slow (not just cached), the problem is likely:
- Resource limits - Check cPanel > Metrics > Resource Usage. See Resource Limit Reached.
- Heavy plugins or themes - See Optimize WordPress Performance and How to Speed Up Your Website.
- Large database queries - Slow database queries are a common cause. Check for bloated post revisions, transients, and spam comments.
- Large images - Unoptimized images are the single biggest contributor to slow page loads
04. DNS Caching
If you recently changed DNS (nameservers, A records, etc.) and the site is not updating, your computer may be using cached DNS. See Clearing DNS Cache and DNS Changed But Site Not Showing.
Site Still Slow?
If clearing caches and optimizing does not help, open a ticket and we will check server-side performance for your account.
Open a Support TicketQuick Recap
- Hard refresh first - Ctrl+Shift+R to bypass browser cache
- Purge server-side caches - Caching plugins, Cloudflare, OPcache
- Check Resource Usage in cPanel for CPU/memory limits
- Optimize images and plugins for long-term performance
- Clear DNS cache if you recently changed DNS records
Site performance and caching · Last updated March 2026 · Browse all General articles
