maybe because i dont stab that much with my heavygreatsword. and when i face other gs users i chamber their stabs, or block and get a free hit from their stun. that might be bias, but i used to be able to chamber polearm stabs to, witch nowerdays i just get hit if i try, and since the buff to the 1handed stab the same has been happening , cant activly chamber, only on luck, because the stab is so instant.