Does anyone else have a problem getting this? I see it's at 55%but I haven't been able to do it once during 72h of gameplay, I am in NG+ and trying it on basic enemies in the prison but it's not happening, it's never green, only yellow. I know how to do it, it just doesn't work, my timing is better than people from the guides I looked up and yet, no perfect block, I just don't understand, at this point it's 100% a bug, has to be.