Right, so as Griff develops as a pocket passer, he needs to get experience working on reads, working on pre-snap alignments, audible, hot routes, and check downs. Things that are completely different from practice vs games.... hence the reps in a game. He can only get enough work on those fundamental things when it comes to the NFL QB position in practice. He probably has a lot of those things, but when it comes to game time, he's not showing those skills. Either he doesn't have them, or he's not accustomed to using them at a game tempo, which would be why he needs the experience in game situations.