Users experiencing choppy YouTube video playback on Ubuntu 15.04, particularly with an Nvidia Geforce 8200 graphics card, have suggested several troubleshooting steps. Key recommendations include adjusting YouTube settings to lower video quality to enhance performance, clearing the browser cache, and pausing videos briefly at the start to allow for more buffering. Additionally, using a download utility to save videos for offline viewing is proposed as a practical solution to avoid playback issues altogether. Despite turning off hardware acceleration, users continue to face performance challenges, indicating potential driver or compatibility issues with the system.