VirtualAxis with To_positioningAxis technology object - TIA 17

Good morning,
I am using tia portal 17 with To_positioningAxis technology object
configured as a virtual axis with module 0 - 360 degrees, for this virtual axis, I also use an MC_MOVEABSOLUTE instruction to bring the position to 0 when I want to stop the axis.
Being a virtual axis, I wouldn't expect it to be affected
from dynamic parameters such as "PreControl and Gain (kv factor),
instead by changing those parameters, I also change the stop point
which must be at 0 degrees.
How do you explain it? and what parameters should I use to always have
the position from 0 to 360 and not 359.9 or 0.2 etc.?
With other PLCs, such as Rockwell, the virtual axis is always accurate.
thanks for your help

Valter