Hi @annacer, thanks for getting in touch regarding the performance of your site while using Site Kit.
If you choose to add services such as Google Analytics, Tag Manager or AdSense to your site, there will be network requests made to these services. This is the same whether you use Site Kit to connect these services, or whether you add them manually, without Site Kit. There will always be a slight trade off when it comes to network requests. We have a guide on the plugin website that has more information on this:
https://sitekit.withgoogle.com/documentation/using-site-kit/front-end/
When checking your website source code, it looks like the Site Kit placed code is being manipulated or removed. This could be due to another third party plugin you have active on your site. Such things could have an impact on your sites performance as Site Kit is not being able to place the code correctly.
I’d be happy to check your site setup further if you could share your Site Health information. You can use this form to share privately if preferred. Let me know if you have any questions with the above.
As we didn’t receive a response I’ll mark this as resolved. Feel free to open a new support topic if you continue to encounter issues, or reopen this topic and we’d be happy to assist.