It's not that I can't chordjack, but it's definitely is and always has been the worst skill (especially dense chords). I find it almost impossible to improve at it when I can get a high 99% on a map only to fail if I try to go up a rate.
chordjack is hard on rate, wait until you can comfortably combo or like above said half rates are super useful for chordjacks in particular same for handstream since they're so density based and require a lot of anchor stamina