Low FPS on Adreno 308 device

I was testing a simple prototype on my Xiaomi redmi 5a which is using Adreno 308 GPU Renderer. The project is simple. I was using the Third Person Mobile template and there’s only one character which has 60 bones, almost 4k poly with low quality Unlit material. The game gives max of 27-30 FPS with character, but when I destroy the character with some code it gives 60-62 FPS. So I think that the problem with the character rather than the scene, But I was wondering why the how that Simple Character was affecting FPS that much?