WordPress load speed: desktop slower than mobile

Hi everyone. I’m facing an unusual issue: two days ago, the load speed of the WordPress site suddenly and drastically dropped. It’s so severe that it can take 3 to 4 minutes for a page to fully load-literally.

Interestingly, when viewing the site on a smartphone, the load speed is just fine. But when I open the site on a PC, loading images can take a very long time, and sometimes not all of them load.

Here’s what we’ve done so far:

1. We contacted Hetzner’s support team (where the website is hosted), and they confirmed there are no issues on the server side.
2. Our admin checked the overall server load (there wasn’t any) and specifically looked at the server logs to see how it responds when opening pages. The server delivers the page quickly, but images load very slowly. This issue only occurs on desktop; as I mentioned, pages load quickly on smartphones.

So, the server and network seem to be fine, but the problem persists.

Has anyone encountered something like this? What could be causing it?

And just to note, we haven’t reinstalled anything on the site, added new plugins, changed hosting providers, or made any other changes.

I’d really appreciate any help.

• This topic was modified 3 months ago by Steven Stern (sterndata). Reason: removed redundant url

The page I need help with: [log in to see the link]