How processor intensive is this?

So, I have a rect which I’ve filled with an image (ok, it could be smaller, but it’s not huge) and this rect is being stretched around the screen by moving it’s path.xN and path.yN values. Running in the sim on my mid-2014 MacB Pro I quickly hear the fan start up and the battery (eventually - it’s not that bad) go down.

Is modifying the path properties something we should expect to be super-CPU intensive or could there be something else going on?

I’m not using the physics engine and I have only a simple piece of logic in each frame to update the object.