TechRadar reports CD Projekt Red says Witcher 3's Letten region needed remaster changes

TechRadar reports that CD Projekt Red says the dense forests in The Witcher 3: Wild Hunt - Songs of the Past's new Letten region were “impossible to realize without the remaster changes.” Describing the early technical challenges, the developer said: “When we started prototyping the area it was impossible to ride with a horse through it.”