Strange shadow issue.


Hope this is the correct place to be posting this, I’m attempting to create a arch-viz environment in Unreal engine 4.22, After a while for no apparent reason I started getting these really harsh shadows appearing in any corner, tight space or crevice,
I do not have ambient occlusion activated.
I’m using movable lights so i don’t think its a baking issue,
Someone might have mentioned it being an issue with sphere reflection captures but I have tried adjust the scaling and the problem still persists,

any help is greatly appreciated!