Why does my render lose indirect lighting part way through rendering a sequence?

Hi there!

I’ve established a look for my cinematic in unreal using the sequencer. When I come to render the movie out…it starts rendering looking as it should. But after about 30frames it pops to a different lighting look. It’s like it loses the indirect lighting I have and the shadows become very dark whereas they aren’t like that in my viewport.

I should add, that when I ‘play’ my scene and look at it in game mode, it has the darker non-indirect lit look.

How do I get my render to just look the same as it looks when looking through my cinematic camera?

Any tips would be much appreciated!

I figured this out. I was being pretty blind…
It was a post process volume with a key frame on it! I deleted the key and problem solved… I do seem silly now.