Issues with SkyAtmosphere with large landscapes

I’m using unreal engine 5 EA. For my current scene I’m using Gaea height maps to make a pretty large landscape for background mountains. Its worked absolutely fine in the past, but suddenly on import I am noticing a visual glitch where the atmosphere bugs out and appears infront of the landscape if my camera gets close, it also produces this ring shaped glitchy pattern when I point the camera down. Does anyone know what causes this?