git help pages: how much % faster exactly are 'custom domain'?

1) has this page ever been updated??? with updated HELPFUL info??

2) git help pages: how much % faster exactly are ‘custom domain’?

5.18  https://github.blog/2018-05-01-github-pages-custom-domains-https/

7.18 https://hackernoon.com/use-custom-domain-with-github-pages-2-straightforward-steps-cf561eee244f

* how much % faster exactly are custom domain

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