Dedicated server issue that we host our websites - proxy requests

We had some issues with our dedicated (managed) web server (linux) that we hosts our websites on HETZNER. All the websites where getting very slow and after doing some research the Hetzner data center support told us that they were too many open proxy requests from the Google Map plugin for a specific website. This affects the performance of all the websites on the server.
Why is that happening and it affects all websites?
How can we resolve this?
Why is the google Map plugin causes these problems?

After blocking the specific domain everything came up normal again.

Best Regards,
Christos
spiral2007Asked:
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SandyCommented:
Check the google-maps cdn reachability from the server network, I guess there must be some network intermittent issue which is causing this delay.

TY/SA
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