There are no settings set in stone, every cutter machine will vary. Once you set your blade depth correctly, then you adjust the force, With blade offset start at 0.25mm Adjust at 0.05 + or minus...until a square has sharp corners. Speed depends on what you are cutting, material and design. I cut small text slow, as well as detailed designs.
Here is how to set you blade depth correctly.
To start with, you should set your blade depth correctly, by taking the blade holder out of the machine, and firmly cut across a piece of scrap vinyl, you will be cutting. You should only be cutting the vinyl and barely a mark on wax paper backing, Adjust blade to get there, Then put the blade holder back in machine, and use the force of the machine to get there, same results, only cutting the vinyl and barely a mark in wax paper backing.