Rendering Better Bloom in UE4!July 14, 2020July 14, 2020by moxier Changing the r.Bloom.Cross can give various results! I prefer a cross of -0.8 to -0.95.It can really make your game stand out, even though it’s a very subtle effect. For me, it makes the games lighting look a bit sharper and intentional. Bloom with -0.93 cross. Bloom with 0 cross.