Lighting Glitch

Hello, I’m working on a horror game in UE4. This is the glitch: - YouTube
Does anybody know how to fix this?

Hi MrGeeky,

This is caused by the occlusion culling. I’ve got a simple video that covers some of the basics of occlusion culling and how to prevent these types of issues here: PBF: Brief Overview of Occlusion Culling - YouTube

I hope this helps!

Tim