Rainbird on 09 March 2010
http://www.eurogamer.net/articles/digitalfoundry-godofwariii-demo-vs-retail-blog-entry
"The conclusions from the video are enlightening: the video above shows a significant improvement in frame-rate in like-for-like scenes. In our analysis of the E3 demo, we were curious about why the game ran with an unlocked frame-rate when in the thick of the action, frame-rates were around the 30FPS area anyway. Looking at the final game, the performance increase speaks for itself, and while there is still noticeable judder incurred by the variable frame-rate, the effect is mitigated somewhat by the quality of the motion blur."
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Quite impressive then 
