I have two sites running on the same server. They use the same configuration (PHP version, WordPress settings, HTTPS, .htaccess rules etc.) While one site shows in Pingdom a wait time for images around 30 ms, the other shows a wait time 10 times higher for a similar sized JPG. Both sites are quite fast, but the first one is considerably faster. I have absolutely no clue what might cause this huge difference. Any ideas?

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  • Welcome to Webmasters! Have you tested these sites several times during different times? It could simply be an anomaly. Cheers!! – closetnoc Oct 26 '19 at 0:53
  • Yes, I have tested both sites several times. The waiting time is more or less the same. Thank you! – user2516117 Oct 26 '19 at 9:41
  • What if you test twice in a row? Is the time faster for the second test? If so that could indicate that faster speeds are caused by the web server caching images in memory. – Stephen Ostermiller Oct 26 '19 at 9:54
  • No, the wait time doesn't change very much. – user2516117 Oct 26 '19 at 17:18

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