They are just misfiring on opportunities, I think, mishandled passes, poor throws a few times, allowing too much pressure on Fromm, penalties at bad times ...
I didn't see much of this last season. The OL did lose one key player to the NFL and now another to injury, and I'm thinking it just isn't as good as it was. People are saying Swift is not running as well, but I don't see holes for him often.
Last year he saw massive holes, perhaps in part because he came in often later in the game.