Graphical Bug/Distortion

Interesting, I turned off Lumen and it certainly does remove the stretching artifacts. However this puts me back at the first issue I noticed where it’s sort of pixelated/white on the edges of geometry as I turn the camera. Is this all GI related? (I’ve got it set to None at the moment). Bit worrying as GI is a bit of a must have for my current project.

UE5 Bug2