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Sequencer starts flickering, jittering after a while

Hi.

I’m using a level sequence to create an end cutscene in-game. Everything was going well until I stumbled upon a problem.

Context

As mentioned before, I’m making a level sequence with character poses, rendered by particles. I have two cameras which are constantly switching. I’m playing this level sequence in-game.

Problem

After about shot 11 (2 minutes into the sequence) the screen starts flickering - jittering. This is quite obvious because of the particles, but it’s pretty much everything that’s getting rendered.

Here you can see a gif with the effect. Most obvious jittering is with the particles and the window for example. But if you watch closely, you can see that everything is flickering. There’s also part of the gif which renders how it should.
The first two minutes it renders all of it like this. But after that it switches between the flickering and the correct way.

What I’ve tried

  • I tried using a third camera, to no effect, the same issue applied
  • I disabled the particles (poses), but the same issue was present
  • Issue present in both the editor and build

Does anyone has any idea what this could be? Any suggestions are welcome. I really have no clue what could be going on…

Thank you so much!

-Kenny