Virtual dimmers seem to fade too fast

I am using a lifx light with color support. In order to integrate this with Alexa and make things easy to say, I have created virtual dimmers for the different colors I like.

The virtual dimmers are used with rules to command the base device.

When I dim the virtual dimmer, the fade delay does not seem be be implemented. Even in the virtual device panel, using the controls, I see the device reach the target level far too quickly.