This TV show is chaotic directing. No clear story line; some scenes take far too long; one con artist stumbles over another con artist and yet over another. South Korea seems to be filled with them all trying to con some unspecified target or other con artists; an abundance of distracting characters; unnecessary scenes that don't add anything to where ever the show wants to go to; a maze of continually introduced new story lines and confusing characters.
The actors really give a decent performance. But if the director and the guys in the cutting room have a jolly day by throwing different scenes and characters in the air and see how they land on the celluloid, then a séance with Stanislavsky, Adler, Strasberg and Meisner or milking your acting energy from your toe nails up won't prevent your acting efforts from disappearing in a black hole.
Using your fast forward to escape some dreary, boring or irritating scenes doesn't help you to get out of this chaos. Hitting the stop button will.