Variations and Hosting capacity

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Hello,

I created variations for about twenty articles on my site. Each article has 912 variations, since the site is as slow as never more than 5 seconds for the loading of the "article" page.

The pages of the articles in question on the soundtrack are completely buggy. 1 time out of 2 impossible to save the slightest modification.

I think the server is not powerful enough but I am not sure.

Here is the server information and my service:

Hostinger Shared Hosting -

Premium 1 CPU core

1024 MB RAM

Entry process: 20

Actif process: 40

SSD storage: 100go

Web server: LiteSpeed

MySQL version10.4

Prestashop 1.7.7.7

PHP Version 7.3.23