I believe it was the opposite. Apparantly Universal wasn't as happy with the scale of the film, in terms of wanting the action to be bigger and the set pieces to be larger, which required them to give more cash to the production, redo concept art, and start production design and VFX work all over again. Uni wants JP4 to be a memorable summer blockbuster worthy of the franchise, so they're sinking even more cash into it than they originally thought they would, to ensure a better, more epic end product.