render slow in Raspberry, and main thread 100% cpu

[foxzool]

I run shader_material example on raspberry pi cm4. It's only 41-42 FPS, how to increate it?

2022-09-29T10:25:36.203756Z  INFO winit::platform_impl::platform::x11::window: Guessed window scale factor: 1
WARNING: v3dv is neither a complete nor a conformant Vulkan implementation. Testing use only.
2022-09-29T10:25:36.278791Z  INFO bevy_render::renderer: AdapterInfo { name: "V3D 4.2", vendor: 5348, device: 42, device_type: IntegratedGpu, backend: Vulkan }

htop see main thread cost 100% cpu

[foxzool]

upgrade mesa_vulkan driver from 20.3.5 to 21.3.9 , shade_material example FPS up to 54 , unlit no shadow 3d_scene up to 60