1. Click on the cog in the lower right-hand corner of the screen to open.
    Click on the settings cog.
  2. Click on PowerPoint in the panel on the left.Choose PowerPoint - the third option on the left
  3. Scroll down to the very bottom of the settings, and uncheck Include PowerPoint Presentation.
    Choose the box next to "Include PowerPoint Presentation" - the fourth option under Presentation
  4. Click Close.

Your PowerPoint files will no longer be embedded in your session files.