Question Fixture Editor: Snapping, Range

I have a DMX-Shutter for an projector in my setup. To control it, i made a custom fixture.

Only one Intensity-Channel to control the motor with two ranges (see table below) and designated DMX-Values to cover the lens of the projector perfectly, no snapping. Intensity to control it fast without using encoders. 

DMX-Min DMX-Max User-Min User-Max Label
140 140 0 0 Open
255 255 1 1 Closed

Advantage for me on the one hand is that a operator cannot use the positions in-between. On the other hand you see the label in Live Table.

Now i have the problem, that the shutter closes in 0 sec although i have 3 sec Cue- and Discrete-Timing for this fixture.

(It is an old one that makes noises when moving it quickly, so i want it to move in 3 sec quietly....)

What am i'm missing? Isn't it:

Snapping not activated, so Eos fades from Position 1 to Position 2 with Cue Time

Snapping activated, so Eos jumps from from 1 to 2 halfway of the Cue Time

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