The Circle of Magic (Spoilers all books incl City of Dragons)

[Rendezvous]

In regard to what 'thul said, I recall Prilkop saying that the Elderlings recognised the Skill Pillars as dangerous and only used them to transport important objects when speed was important etc.. and then only used one pillar at a time, sending another person through the next one. For this reason I doubt Fitz having a problem was more that he was tired, stressed, overconfident and not overly cautious with them.