When you watch him have the puck, he looks frightened, unsure, uncomfortable, and downright awkward.. Then when he plays it, it almost always turns into a turnover
He has trouble with making quick decisions, but his puck handling ability is perfectly fine.
All goalies look awkward, think about it. You are wearing that huge goalie gear, you have a glove on one hand and you have to go behind that tiny space inbetween the net and the boards, then quickly get a good grip on the puck to make a good play.
It can be a tough thing and he has been fine for awhile.