Impetigo
I have to assume that the brand new 64gb SanDisk Ultra Class 10 SDXC card is responsible for the occasional video recording stutter/pausing that has happened since I started using it today.  Prior to that, never had an issue with my previous SanDisk SDHC card.  But today on its maiden trip, it has led each video (only 3-5 minutes long each) to have several performance issues that by default I have to attribute to the card since nothing else has changed and I've never had an issue in the four months that I've had my Galaxy Note 2.  No problems formatting this card though or installing/using it otherwise.