
CD Projekt Red says that the State of Unreal's The Witcher 4 tech demo shows that swapping from its RED Engine to Unreal Engine was "worth it," and that "it's not like we lost things because of the transition," anyway.
Speaking after the State of Unreal showcase, CDPR senior technical animator Julian Girbig is full of praise for the engine when asked about the jump to Unreal from RED.