@edgars-batna
Since the buildplate does not move on a delta, there is very little mass involved in a Z move. Besides that the mass is moced by 3 stepper motors simultaneously. All three arms move up identically during a Z hop. Most CoreXY printers use leadscrews which move the bed pretty slow and certainly not quick enough to snap the thread. On my Rostock I've set Z-move to 10.000 or something. It is probably limited by other factors, but it gives a real good "Clunck" sound at each retraction 😉
