Every major Unreal Engine upgrade sucks for the first few years. Eventually it’ll get optimized (the source is available and studios regularly contribute to it) or the documentation will start pointing out pitfalls and ways to increase performance. We’ll just have to suffer through a deluge of chip-melting games until then.

I wish there was more competition in the high-end game engine scene. Unreal tries to do all of the things all of the time and suffers for it, Unity requires tuning to look good and its management keeps shooting itself in the foot, Godot isn’t nearly there yet and has a bare-bones approach that requires devs to implement nearly everything from scratch, and the dozens of in-house engines that have been open-sourced lack the community or documentation quality to foster significant uptake.