Iβm here to ask for your wisdom. Recently I decided to give 5.4 a chance for a real estate project Project and while developing landscape and exteriors I got no complain but when I moved to interiors this kind of issue started to happen while rendering with movie render queue and in-editor
I have the same issue! It seems to be due to high use of rectangle lights. I have a room with 6 windows and I put a rectangle light for each one. If attenuation radiuses cross each other, this artifact is created. Iβm investigating.