I have Rev B 1.86 SSD MBA. It doesnt play 720p HD youtube smoothly. Jerky not coz of internet connection as I have 10 Mbps and up. My question is 2.13 MBA able to handle 720p? If the next MBA uses i7 (according to Scottdale), will that handle 720p? How about 1080p? Or maybe 1.86 can handle HD, but I need to optimize it?