DFP now officially supports asynchronous rendering!
Thu, Oct 27, 2011
Vote on HN
Yesterday, DFP launched asynchronous ad loading. For the past few months ive beentrying to load ads in a manner where it doesn't affect rest of the page load, this new development is like a dream come true.
(The tests above were run on webpagetest.org on IE8 at Dulles, VA)
Thank you Google! You just made my day.