I have the same problem with both c++ and blue prints radial damage with falloff. However, for me, this is only a problem when it damages character actors. I have networked destructible walls I was working on as just an actor and the damage seems to apply to them fine. I don’t know if this is a bug or has something to do with damage falloff.
I am trying to make a grenade:
Base damage 100
min damage 10
damage inner radius 120
damage outer radius 500
damage fall off: tried many things and doesn’t do anything.