If you are having an issue with the FPU Videos not playing properly (the video may seem to pause or skip or otherwise not play smoothly), you may need to adjust the video resolution or check your internet connection speed.
On the video player look for the "gear" icon and change the resolution down to 720p or lower.
You may also need to clear your cache and cookies data and make sure your browser is up-to-date with its latest version.
Once you have done that, try signing back in and watching the videos again.
Lastly, make sure you are using an updated browser like Google Chrome or Mozilla Firefox as opposed to Safari, Internet Explorer, or Microsoft Edge.