QTplasmac uses external offsets. External offsets requires some portion of the velocity and acceleration to be apportioned to it. This is done with the eoffset ratio in your ini file.
With plasma we do some tricks because normal motion and external offsets are mutually exclusive.. So we use double the velocity and acceleration with an eoffset ratio of 0.5. this gives 100% of velocity and acceleration when operating whether cutting with THC or jogging.
Now QTP also applies External offsets to the X and Y axes for change consumables etc.