Hi, Izy_u_turn!
What effects do you use?
Do you have the opportunity to send your lanterns? You should reduce the light or the range of the lights, since the screen space is used to build a three-dimensional light.
If you used niagara for these purposes, then you could avoid seams.
My mail
Try check settings in DMX template in UE4.27
They have good examples of light and lasers.
