As others have mentioned, the calls aren't the issue; they generally get them right, although there have been some pretty blatant pass intereference calls/non-calls that made no sense whatsoever. But the bigger issue is game management. It seems like every time a flag gets thrown, there's a 3 minute powwow in the middle of the field to figure out what's going on, what infraction was committed, where to spot the ball, should the clock be running, what time should it read, does the coach want to decline it, call the play, wait, there was a mistake in telling the coach what happened, now he wants to accept it, let's review where to spot it again and where the play clock should be.... When this happens 15-20 times a game, it just gets outlandish. NFL Red Zone has had to cut off their broadcast before games have finished 2 out of 3 weeks this year, and it's because games are taking 40 minutes longer due to incompetence on behalf of the refs making quick calls, spotting the ball in a timely manner and letting the game continue. You have announcers literally saying "we'll cut away from that game, they'll be done spotting the ball in 5 minutes or so," and then coming back in 5 minutes, and they're still reviewing something that is obvious to everyone with eyes. They're trying their best, and I don't fault them for that. But they are maddeningly incompetent to referee at this level.