Google's "field test in Indonesia: can mobile web pages load faster?" – Any noticeable change?

Hi everyone in Indoneisa,

Google says it has started testing a method to make pages load much faster (up to 4x according to Google) for those on a slow connection, such 2g. They say the feature was launched on May 14. Has anyone noticed these changes? 

I have not,  though I’m often on a slow, or unstable connection. Most commentators on the Google blog say the same: no effect. What  could be the reason, what conditions need to apply for these faster-loading pages to come up?