Break mode *purports* to do something like this, but in practice it does not work well for absolute effects with more than one step.
I'd like an effect attribute that will sweep a step across the entire selection, and then not move to the next step until that is finished. So if I have a Red-Blue-Green effect, all channels go to Red, and after the last channel in the selection finishes its Red step, the first channel in the selection begins the Blue step.
Right now this is a little annoying to do, and is limited by whatever a trail of 01% gives me, which is not much control.