I just recently purchased the M100 camera and have been testing out the functions around home. I have this camera set for video, where it takes a picture first, then the video. When playing the video back in my computer (Windows XP operating system), the video plays a little, freezes, plays a little, then freezes again, doing this until the video viewing is completed. I have tried Lexar and San Disk 2GD cards with a #2. Both cards were formatted in my computer before using. These cards have worked excellent in the Moultrie Game Spy D55-IR. To operate properly in this camera, do I have to go to a card with a higher reading say #4, #6 ,#8 etc.? Thanks for your help.