Why my frame stuck at 40 on Android?

Question

I used Godot engine 4.2 RC.1 mono version
with .NET 7 try to export my project on android.
The game displayed 40 frames on my Samsung Galaxy A12.
I took another test on Samsung Galaxy A70, But get the same Frame stuck on 40 FPS.
I checked that the V-Sync was disabled.
For more information:
It gives 2500 FPS in debug mode on my computer.

Buckler

Answer 1

Okay, I try to use CustomColor background instead ProceduralSkyMaterial for WorldEnvironment Node.
I took the test again and got a strange result:

Before that I try export Game with Unreal and get more FPS on Samsung galaxy A70:

Also, I tried to use a program to show the amount of graphics usage, but none of them recognized the graphics.
If you know a way to see the amount of graphics used on mobile, please share. Thanks. 👍🙂

Buckler