Sequence Frame Break´s

I just started to make an Intro for my Game with the Sequencer.
After starting the finished Sequence in the Level Blueprint on Begin-Play, some Frames just break out. Even when I render the Video or some Images, there are some Frame Break´s in the pictures. These breaks are about every 10th or 11th Frame.

But in the Sequence preview, everything works smooth.

Frame 10:
Frame 11:
Frame 12:

I already tried so much but I have no Clue what is wrong. I tested another Sequence in the same Project in another Level, everything worked fine there, so it needs to be somewhere in the Level or the Camera.

Question closed, just found the solution:

I put the: “Create Level Sequence Player” node into an Sequence wich caused the Failure. Without the Sequence everything works fine