Movie Render Queue Issue when rendering in higher output resolution

Hi all, been running into a problem with UE 5.1.1 where when we use the movie render queue to render an output resolution higher than 1080p it would glitch everything out. This is what we mean:

This image is being outputted at 3840x2160

This image is outputted at 1920x1080

They both have the exact same rendering settings the only difference is the output resolution.


Running an RTX 3090, i9 9900k and 64GB RAM
Any advice would be greatly appreciated.