Weird overhead spikes on AppleTV with Metal

I am receiving weird spikes caused by "Overhead" on Apple TV in combination with Metal. Using OpenGL, the spikes completely disappear.

For example, when I instantiate a few game object (notice the slight blue spike on the screenshot which is normal), two frames afterwards there is another spike caused by Overhead that takes a complete second and then renders the whole screen black for a short instance.

For now, I will just be using OpenGL but I hope Unity solves these issues soon. Do a lot...

Weird overhead spikes on AppleTV with Metal