I posted in [PC] Tech Support as well but I am not getting any replies, so I’m posting it here as well.
I can’t grasp anything 95% of the time. Occasionally it does happen, but most of the time it doesn’t.
I’ve tried on a huge variety of mobs, also tried all of the Phasegrasp variants, none work.
I got a gif of it here: https://gyazo.com/946cd1cf40512daeb7b1d51c219c7ed4
Note in the gif that a red error sign appears over the phasegrasp action skill icon in the bottom right corner.