How to switch to screen space instead of lumen

To start, I am trying to enable a way to switch between lumen and screen space renders so different people in the game can do what they want, but when I switch to screen space with the reflections and global illumination my screen gets very weird glowing dots in some corners. I don’t know if there is a lumen thing on that I need to turn off while using screen space. I need help and I have had this issue for a couple of months. I am 3 months to unreal engine so I don’t know much about how to do things at all.