Physics/collision on human skeletal meshes/actors?

Hey all.

I seem to always have this same problem and I dont know what to do to fix it.

Basically if i have a bunch of skeletal mesh characters, player or NPC. And i hit one with a melee weapon, somethimes the character behaves proper…i.e gets hit and plays the animation. Other times tho the character will go flying 100 feet through the air. If they step on a weapon thats simulating physics they get launched into space.

Like… if all other aspects of the game are solid… is the physics just crap? or am I missing something? like these kindsa things happen to often to be able to package it and sell it. Anyone know how the stuff works? I’m talking about meshes that arent ragdoll’d. Still “alive” running around etc…

Thanks in advance.