Why is CPU and GPU usage so high on almost empty scene

Hello,

I created a new empty project in Unity 6 using the Mobile 3D Preset and added a plane, a box, and a directional light. I capped the FPS to 30 and disabled all physics simulations and shadows.

I compiled and ran the game on an iPhone 13 Pro in Release mode, and I get around 32% CPU usage and 60% GPU usage with very high energy consumption in Xcode.

As a native iOS developer coming from app development—where I am all about optimizing for battery life and squeezing the most performance out of the hardware—starting from such a high baseline is kinnda depressing.

(Not to mention that with a 120FPS is a whopping 67% in idle on this empty scene)

Is this normal, or am I missing something?

Thank you!

have you found any solution for this problem i have the same thing