Phantom Shadow issue with Lumen question/help.

Hello!

So I for the life of me have not been able to figure out how to fix this shadow issue when using flickering lights in my scene. I am using lumen and am not sure if that’s what causing the issue or if I just need to change a setting. But the issue I am having is everytime a light flickers you’ll see on the wall that it casts weird shadows onto the walls. it almost looks like its shadowing out the roughness map. Not sure how to fix this problem and was hoping the community could help me out.

This is also my first post so I apologize if this is not laid out correctly.
Hoping anyone can help thank you!!!