Our new site will be using static site generator which is supposed to be better for SEO?

[TyEl]

Hi folks,

Our dev team is planning on building our new marketing webpages on SSG or Static Site Generator(we are stepping away from SSR). Based on my research this is something that can help our SEO in particular for site speed (our site has a poor score).
Are there any challenges or concerns I should be aware regarding this direction?  If so what are they and how can this be addressed?

Thanks