Hi, I have enable this module and after several speed test I run, there is still message that I shout use gzip to decrease css and js size.
I was inspecting in sites/default/files/advagg_css/ and there is *.css file with his *.css.gz twin:
In performance settings Aggregate and compress CSS files is checked as same as Create .gz files and Enable advanced aggregation. I though that after this setting module will serve gzipped css and js files automatically. Do I need set something else (on my server)? What I do wrong?
I have used this speed tests: