Surface Light Glitching

hello! im making a bunker for my game and i have this bug where the surface light on top (invisible duplicate of the roof with a surface light) glitches. it causes the surface light to glitch. how do i fix this? any help would be appreciated!

ā€“ see video here (FLASH WARNING)

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You might want to try changing the lighting system over to shadowmap and/or moving the surface light lower.
Is there any script tied to this surfacelight?

no script is attached to the surface light. let me try what you suggested

didnt seem to work. also my lighting is already set to shadow map

im assuming the issue could be caused by the surface light by itself - is it like raised above the map? maybe you could try using smaller pointlights instead on the ceiling