I was playing Silo and i noticed that my fkn stun in tree grapple does not work!!!! i dont know if this was just a one time thing but i do think u guys at s2 should fix this. that is to big!!! the match ID is 96133058. its not a long game because we got owned but there are couple of times where it did not work. I could not use the stun for the whole game.
Uninstall your mods.