Can you provide some more details about the videos?
- How many videos are you playing at the same time?
- What is the resolution of the video(s)?
- How were they encoded?
- What version of the engine are you using?
Any you can share the video somewhere, so I can test it myself?
You can also email me at max.preussner@epicgames.com if you want to share any confidential files or links. Thanks!