The cruise will continuously accelerate then decelerate after you set it. The rate of change isn't large but it is just like someone that pumps the gas while driving because they can't seem to hold a steady speed - yes, my wife once did this :-)
The full range of speed is probably around 5 mph.
I hate to have the dealer charge me $100 to say "this vacuum hose was leaking" plus have my taco at the shop all day.
Anyone have a similar issue and a solution?