When I watch a video that has 720p available and then I go to another video, if 720p available too, it will automatically select it. But if the other video does not have 720p it defaults to Auto. The issue is that auto, starts caching from the very bottom quality, making the video really poor quality.
It would be awesome that if 720p was selected, for the videos not to default to auto, but to the nearest below 720p.