>cookie cutter engine that anybody can buy and start using is prone to amateur spaghetti and shortcuts
pic related is a good example of what happens when even a somewhat experienced developer jumps into UE5, attempts a somewhat open world experience by making the level huge as fucked, and then tanks every rig's framerate by tying their lighting to ambient occlusion, where the only alternative is to turn it off and play in a shadeless, fullbright mess.