I mean for Netflix's sake, I hope the Korean does much better! lol
It is pretty much copy/paste. some things are different but obviously when a location is changed, so do some aspects to fit "realism".
personally so far, I would watch the Spanish if you do watch any more of it. All of the seasons are out, characters fit their physical looks much better, and ENG overlay sounds a bit more realistic.
Korean stuff can be hit or miss. Some shows I love and others just leave me saying WTF.