I think Golovkin stops Jacobs too.
There's a lot of people talking about how much Golovkin got hit, but he has done the same thing in most of his recent fights. He nearly finished Brook in the first round then let off the gas and turned it into a street fight like he said in the interviews. Brook gets credit for what he did, but Golovkin was never in trouble and the result was predetermined based on the power/size differential.
Remember the fight with Willie Monroe? He beat the piss out of him and then let him back in the fight. I don't expect him to do the same if he feels somebody's power that gets his attention. He'll tighten up his game at that point. Until then, he'll keep it more fan friendly.