Thanks Jeff.
You are rigth. After burning disc, everything works fine including menu swapping using Auto Activate which is flashy and poor response in Preview mode of V2.
I know it may not smooth in Preview mode but never know it may not function at all.
Adobe should mention this clearly. You know we can’t often burn a DVD to check project especially when we do it in class. People expected that a newer version should not only have more features but also more performance.
Anyway, thanks again for your advice.