Are there any runtime solutions like plugins/extensions that might help me optimize all my sites (in the CMS software mentioned above) so that for each page they show the public, the HTML/CSS/JS for the ABOVE THE FOLD CONTENT is automatically optimized and reorganized in runtime. Pagespeed ratings for my sites which were high ones have dropped due to this new requisite. I can see the sense of it but I am clueless as to how to achieve this with the least possible effort. I don't mind commercial plugins but I'd rather not waste days if not weeks trying this by hand. I have far too many sites to manage to be even able to do so, even if I wanted to get my hands dirty.
Any ideas would be welcome