Sure. There are several different parameters that can be adjusted, including the step rate, the step time, the starting point, etc. All of these collectively are usually referred to as “ramp rate.”
In order to be able to change them you need a custom device type handler that can access those parameters. There are several that have been developed in the community. Some of them require that you make the parameter settings in the code and just run it once. Some of them let you access them through the device tile that you see in your things list.
Once you have the parameters set to the way you want, you can go back to using the official device type Handler so that the device will run locally. You only need to use the custom code for long enough to set the parameter settings as they are stored in the switch itself.
You will find further discussion and some of the device type handlers in the following thread. You can ask any follow-up questions there and people should be able to help you.