Not really
People like to act like he's still the INT throwing/turnover machine he was 4 years ago when that's far from the case. Aside from the first Detroit game, he'd been having a great season up until his injury. Dude had the fourth highest QB rating in the league up to that point as well. Also, you gotta remember, this is the first year he's had a decent offensive line in Chicago as well, and i'd say he's having a better season than many expected from him up to this point (not like they expected anything short of 25 ints anyway). His decision making has improved greatly although it's still questionable at times.
Looking at his stats, i can see how someone would think that he underperforms, but if you watch him play ,you'd see that's far from the truth.