I just programmed a few scenes and I am not getting the strobing effect with the design spots.
I think its a matter of how your recording your scenes.
For example If I have scene 1 lights on with blue wave gobo in position 1.
I would then simply bring the dimmer down to zero and record scene 2 with the dimmer all the way down.
So when I go from scene 1 to scene 2 and I add a fade time, the dimmer takes the time to dim, and thus no strobing.
I just thought about it and I think you are using the shutter instead of the dimmer.