This might be the post @hawkfabshop was mentioning. Langmuir mentioned that they used an electro-mechanical relay with the Pro instead of a reed relay that was used in the CrossFire OG. Reed relays are much faster than EMRs (by a factor of 5-10) and I think that is the cause of the delay. I believe they are working on a “fix” either through post processing or using arc transfer signals from the plasma cutter.
I have the Hypertherm 45XP and I cut mostly 10 and 14 gauge. I have had good luck with a .5 pierce delay on both thicknesses, but I typically slow the cut speeds and adjust amperage down from the recommended “book” values.