Hum, none of the pics or videos seem to be rendered in Unreal. They all look like 3d programm + render, like for example 3ds .
If you really have all that in Unreal, can you please post a video from within the Editor with one of the scenes and move like a static mesh?
You can use free software to record any part of youre screen(s) like “open broadcaster software”. Also a movie with youre mobile phone would do.