Several games implement a fairly high frame rate cap, usually ranging from 200 to 300 FPS, to prevent situations where the GPU is not rendering a 3D scene and gets maxed out pumping hundreds or thousands of frames.
Although an external frame limiter can do the same, I think it would be a good idea for Asobo to implement such a cap for users who are unaware this is happening. It would go really well with the new Low Power mode.