Lumen GI and Reflections feedback thread

Having an issue with raytraced lighting popping in & out? (Bottom of the door frame) There’s some strange filament/solar flare looking rays coming from the door frame too. Any ideas what is causing this? I am new to UE so it’s most definately something I’ve done wrong but hoping for a solution as I can’t seem to figure it out.

Here you can see the flare like issue zoomed in.