Slow landing page

We experience a problem with the landing page, the download is very long. We have several website on the same hosting provider, this is the new website, that we are building it, but the loading process especially the landing page is very slow. We did caching and all the images are optimized and the download is fast, as you can see. Do you have any idea what can it be?

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Hello,

Could you please check how it works with some default WordPress theme like twentysixteen to understand is it our theme issue or not?

Regards

[Author]

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