It only moves millimetres at a time at a given time.
There isn't a user defined setting that can be turned On or Off to affect this @Darren777
At first I thought mine wasn't moving until I placed a piece of paper directly underneath it and then could see it had moved.
If you still feel it's not moving then my advise would be to turn AOD Off then reboot the phone by turning it Off and On and then turn AOD back On.
If no resolution then turn AOD Off in the interim and then seek out m a Samsung Experience Store or Samsung Service Centre can take a look.
Daily Driver > Samsung Galaxy s²³ Ultra 512Gb in Phantom Black.
The advice I offer is my own and does not represent Samsung’s position.
I'm here to help. " This is the way. "