When I enable "ModPagespeedEnableFilters defer_javascript ", the page is going really fast.
I win the Page Speed Insights Score added +30 points .
Unfortunately, then there are a few problems :
Chrome with active Adblocker plugin didn't render the page completly. It hangs in process ("waiting for Adblocker Plus" in the status bar.
In FireFox the problem doesn't occur with active AdBlocker.
With deactivated Adblocker everything is fine in Chrome and FF.
In Safari on iOS (eg iPhone) the page will depend also.
Anyone got a solution?