Problems on collision between two characters(actors)

Hello guys,

I have this weird problem, when two characters overlap/collide(AI with the player,or AI with AI doesn’t matter they share the same Actor class) it throws one of the characters pretty far away in air.
I know that the problem is because i’ve changed the collision to block all for its skeletal mesh component but i need it for the problem with the missile to hit the character(if I change the collision back to default the missile will pass through them). I’m pretty new when it comes with the ue4 properties and i’ve try a lot of them(maybe wrong): physics, set the mass in kg,etc but it didn’t work.Is there any work around for this bug or any other properties that I’m missing?