Why it matters
self.__next_f.push scripts duplicate server-rendered text for hydration; when they exceed half of a large document they push content towards the 2 MB crawl cap and slow TTFB.
How to fix it
Pass only the data Client Components need (not whole records), keep large static content in Server Components, and paginate.
References
More seo rules
void seo reports 60 rules in this category. What search engines need from the raw response: status codes, titles and descriptions in <head>, self-referencing canonicals, one h1, crawlable links, Open Graph, icons, robots.txt and a sitemap with real dates.
noindexIndexable page carries noindexrobots-snippet-restrictednosnippet or a very low max-snippet limits previewssoft-404Missing page returns HTTP 200 (soft 404)html-too-largeUncompressed HTML is over Googlebot's 2 MB fetch limitnot-httpsPage served over plain HTTPorigin-redirectshttp:// or www/apex variant doesn't redirect to the canonical origin in one hophtml-lang<html lang> missing or not a valid BCP 47 tagviewportViewport meta missing, not device-width, or blocks zoom