Dumb SEO Questions

(Entry was posted by Madalen Ross on this post in the Dumb SEO Questions community on Facebook, 05/11/2017).

Site Speed using W3 total cache & pagespeed insights

Re Site Speed using W3 total cache & pagespeed insights.
Page speed is slow.
There`s a lot of javascript and css.
Added the scripts from pagespeed insights to W3 which improved speed greatly but it breaks the site.
Tried a customised version instead and it still broke the site so have had to remove all and go back to the beginning.
Have removed unused plugins and optimised images.

Any ideas how to deal with this?
Thanks

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    View original question in the Dumb SEO Questions community on Facebook, 05/11/2017).