Players bunch up and keep bumping into each other

Another issue is body checking.  Let me be clear:  I'm not talking about missing an opponent by throwing a hit just as the they deke (those things happen in actual games).  I'm talking about when you try to throw a body check and your player jumps in the OPPOSITE direction from the player they were lining up.  They literally jump in the opposite direction of their momentum.  It looks like the player trying to make the hit is, instead, trying to jump out of the way.