I mean, it is and it isn’t. You picked hard mode, and Unreal’s abstractions are not always great - some things are abstracted to hell and back, others are literally hard coded and impossible to modify (hello CMC). But changing the character movement using CMC (or mover if you want), is very doable with a 30 minute YouTube video. It’s also going to be way, way less work than throwing everything out and starting from scratch. There’s always the option of implementing your own movement on the character instead of using Unreal’s.