I still have hundreds of DVD's and so have the apple USB external drive that I plug into my MacBook to play movies when I'd rather play them on MacBook over my Blu-ray player next to my TV and AppleTV. Today I was watching Troy and unfortunately during a good part the computer paused for a few seconds and I missed the scene where Hector strikes Achilles in his armor. I was playing the DVD on battery power. Was this an issue with the M2, the DVD itself (they do get scratches) or running on battery power? The M2 is an EXCELLENT chip and much faster than the Intel i5 of my previous MacBook. Thanks..