I would have also set parameter 10 to 0 as you have.
Parameter No. 10 - Time of Automatic moving the Dimmer
between the extreme dimming values.
Default value: 1
Options for changing parameter 0-255 (0ms – 2.5s)
0 - this value disables the smooth change in light intensity
NOTE value 0 is required for inductive and capacitive devices
unsuitable for dimming, (e.g. fluorescent lamps , motors etc.)