Problems running a Level Sequencer in the scene

Cesium for Unreal
1

Hello to all.

I have a problem with Cesium ( And I have detected that it is Cesium that is giving me the problem ).

I have a Level Sequencer to make a kind of Tour for some areas that I have finished.

The problem is that if I have Cesium in the world, it goes at very low FPS, especially when the camera rotates.

If I remove it directly from my outliner, the cinematic goes fine.

If I do a Hidden In Game in the sequencer, it still works badly.

The truth is that I don’t know what to try and that’s why I need help, I hope we can solve it together. Thank you all very much in advance.

I’m using version 5.3.2

2

Hi @falutomencolo, welcome to the community!

This is one of those unfortunate cases where what is supposed to be a feature actually ends up being a bug in a certain use case.

Most people who are using Level Sequences are using it to record videos. When recording videos, it’s important to make sure that tilesets have a chance to load fully for each frame before snapping the frame. So when Cesium for Unreal detects that it is running under the control of a Level Sequence, its Update method purposely waits for all data to load before continuing.

But it sounds like you’re not recording a video. So in your case, waiting for tiles to load just makes everything run really slowly.

We have an issue capturing this problem, and it also includes a workaround that you can use:

3

@Kevin_Ring

Exactly, I don’t have it to record videos. I have it to make a cinematic when I enter my app.

The app is changing every week, so recording a video would be very time consuming.

Is there any solution for this issue? The truth is that this kind of thing is limiting me a lot.

Thank you very much again.

4

Yes. As I mentioned above, there’s a workaround mentioned in the linked issue.

5

@Kevin_Ring thank you for your quick responses, it is very important.

Do I need to do a ‘Play Movie Sequencer’ when the animation is finished or is it not necessary?

image

6

Do I need to do a ‘Play Movie Sequencer’ when the animation is finished or is it not necessary?

No, that should not be necessary.