Decent pc for sure, it’s good for it, I can tell you that in regular Unreal Editor 5 everything works fine, I was editing terrain in UE5 earlier and no similar crash have happened, I’ve been working in UE5 for a full month, Ive had crashes but other type of crash. It’s all about UEFN now, because it’s problem only in particular case which is Landscape Mode - editing terrain.