What are recommended filters for using Pagespeed along with Drupal 7 (and Advagg enabled)? We are planning to integrate Google Pagespeed module in our Drupal 7 site which is already using Advanced for CSS/JS Aggregation (Advagg).

Based on the inputs at https://www.drupal.org/node/2182289#comment-8421621 , it seems that Pagespeed CSS/JS filters are not needed since the same job is done by Advagg. Pagespeed has other useful filters for image optimization and inlining critical css.

My question: If someone is using Pagespeed along with Drupal and Advagg, can you share the Pagespeed filters that you are currently using or would recommend? If you are using Pagespeed with Drupal but without Advagg, please share your filter recommendations.

I have been searching extensively on this topic but couldn't find much practical information on using Pagespeed along with Drupal.
Every site is different. I recommend extensive testing. http://www.webpagetest.org/ is one of the better sites for testing the frontend and seeing what options are best for you're site. Be sure to test more than just the frontpage &amp; look at the connection view; using the bundler you can adjust this a little bit, try a bundle of 1 or even 10. Point is you'll need to experiment to get the best results. The modifier has lots of things you can do to tweak things; deferring the js is one of the better options in my opinion.

I've heard that google pagespeed has a +-20% difference; it works better or worse depending on various factors. Give it a try and be sure to test!

Work on inline css is being done btw: https://www.drupal.org/project/css_delivery