It’s not bad, it’s just an unoptimized game engine that has good quality.
Unreal C++ build system
Unreal’s memory management .
These two drag it down regardless of the quality it can output as a game engine.
I’m still in unreal 4 latest ver for it with 8gb and a quad core processor at 3,8GHZ, I’m going to upgrade my ram, I was reading specs for unreal 5 because I want to switch to it and they say 16 gb might not be enough and this is suppose to be an engine for indies and solo devs or small teams.