CNC override speed reduces threading speed (fanuc controller)

question i been having issues on some of our machines that when you use the override to slow down because of the part either to long or crooked and it slows down on every step beside the threading process any answers on that part or where to go to fix that issue that way i don’t have to slow down my speed and then put it back up on every part thank you!

Which controller are you using? Buildbotics, Masso or RTCNC?

i’am

using Fanuc control