The original igus steppers were rated at five point something amps. apparently. Its the 600 x 600 room with the very deep top beam:
I got a lot of conflicting info early on, so swapped them out for some decent regular nema 23.
Am pretty sure it is just too chunky and have given up on it. I'll try it on a duet and if not swap it for a buzz automation set up. It's wasted too much of my time time at this point tbh.
Substantially quicker and cheaper to change the gantry than keep chasing my tail. especially now with losing the painful marlin settings.