If you use components that can bake “on demand” (see for example bake components in the Elefront plugin) you can tell Gh to change values in sliders in small steps (takes a bit of scripting as well) and have Gh to bake at every step.
If you can do with manual changes to the model, you can manually drag some “guides”, like I do in the gif below where the rest of the geometry updates after each manual move of the “guides” (the plane in this case). In the gif Gh bakes the geometry anew after each manual move, deleting the existing geometry before baking again in the new position. I just did this last night, and recorded the gif a minute ago.
Fig.1. “Bending steel” in realtime with Gh (low framerate due to file size) :
// Rolf