I think RollingThunder has it right. When I render the videos I turn all of the settings all the way up. Gives you great video quality. Problem is that it comes with massive video file sizes. It takes a good internet connection to make it run smooth. Hit play on the video. You will see a thing that looks sort of like a gear on the bottom right hand part of the screen. Click on that then click quality. From there you can select a quality that will work with your internet connection.