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I took 2 videos from my iPhone 4s. I don't notice any lag with my base rMBP and OS X 10.7.4 lion. I have only felt lag once and that was fixed by logging out and logging back in. If ML has performance improvements and better memory savings it will be sweet. But I don't feel lag, on the base rMBP.

Let me know your thoughts.

http://youtu.be/e4sUPc3rBuw

and

http://youtu.be/ho7awJPcUSk

and the background noise in the first video is my A/C, and my fan in the second video.

The rMBP is pretty quiet.

13000 new emails? HOW DO YOU LIVE WITH YOURSELF?
 
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