Minecraft: Story Mode Support
[Xbox 360] The audio/video is lagging in my disc version
If you have the physical disc version of the game, an internal Xbox hard drive is required to run the disc depending on which model of Xbox 360 you own.
To check which models this requirement applies to, please read the back of your disc's box. If you have a model that does not include an internal hard drive, such as the 4 GB model or Arcade model, you will need to install a hard drive with at least 6 GB of free space available.
Please note that only an official internal Xbox hard drive can be used. Using an external regular USB drive or flash drive will not resolve this issue.
For full instructions on how to install and use an internal Xbox hard drive, please read this Xbox Support article.