He has no one reliable to throw to. Way too many drops this year and WRs giving up on catch-able balls. Drops have cost this team as much as poor throws. But he's the QB, so he takes the heat.
Who can he trust? Stepherson is clearly the best ND has, at least most reliable, and he has had a few drops and nearly dropped the first TD.
Just my opinion, but I believe he is trying to be too perfect with the football because he doesn't trust his receivers. He fell apart last week after Claypool dropped that pass. You could see it on his face, it affected him greatly. He needs to be mentally tougher, but fuck, someone has to step up and help him out.