Parts of Fusion clip are different when rendered

I have a Fusion clip in my timeline, and when I render it (either in the timeline or in an export), some parts are different in bigger ways than just the render filetype settings. It looks like it's being rendered with different settings on a node or something.

Here is an screenshot of a frame of the Fusion clip:

Screenshot 2021-11-04 061440.png (567.04 KiB) Viewed 268 times

And here's the same frame in a render of the clip:

Screenshot 2021-11-04 061502.png (639.99 KiB) Viewed 268 times

Obviously the grainy-ness of the render is from the render settings, but it almost looks like the chroma key that's merged on top of it is from a different frame of its source clip. I'm very confused. Anyone have any thoughts on this?