Kind of hard to describe it, but I ran into this when I got Valkyria Chronicles (great game, by the way). Essentially, you come across a guide to how to get all the best stats or how to get the absolute best rank, and then the game turns into a routine of following specifically laid out strategies and timed events. Heck, I think Persona 3 Portable ended up having the same efficiency grind issue as well, and that is more of a classic RPG with a relationship sim tagged in.
People usually say if it makes the game not enjoyable don't follow the guide, but it's sort of like opening the flood gates and letting the water out, and then having someone say just close the gate and you wont get wet. o o;
People usually say if it makes the game not enjoyable don't follow the guide, but it's sort of like opening the flood gates and letting the water out, and then having someone say just close the gate and you wont get wet. o o;