Nitropack is really effective at improving metrics! Today my site https://europeanproperty.com had GT Metrix of F see original report: https://gtmetrix.com/reports/europeanproperty.com/1Ujv6gHV/
now without any other intervention is B rating see https://gtmetrix.com/reports/europeanproperty.com/5AdWTsKr/ser

Faster-loading websites provide a better user experience. Users are more likely to stay on a website that loads quickly and navigate through its pages seamlessly. This improved user experience can lead to lower bounce rates and higher engagement, which are positive signals for search engines.
Google, in particular, considers mobile-friendliness and mobile page speed when ranking websites for mobile search results.
Search engines like Google may use site speed as a ranking factor in their algorithms. A faster website can outrank slower competitors for the same keywords and content, assuming other factors are equal.
Search engine bots crawl and index web pages to determine their relevance and ranking. A slow website can hinder the crawling process, potentially leading to incomplete indexing and negatively affecting your SEO.