### Godot version

v4.2.beta1.official [b1371806a]

### System information

Ubuntu 22.04.3 LTS 22.04 - X11 - GLES3 (Compatibility) - AMD Radeon RX 560 Series (polaris11, LLVM 15.0.7, DRM 3.42, 5.15.0-88-generic) () - AMD Ryzen 3 1200 Quad-Core Processor (4 Threads)

### Issue description

![image](https://github.com/godotengine/godot/assets/1330325/7a986599-5a68-42a4-beb1-5d3b4bf7db6b)
![image](https://github.com/godotengine/godot/assets/1330325/e8b8546b-b47b-4add-9567-7f70709ab03c)

Culling 3D goes bellow 60 fps even with just about 50 simple animated models. With v4.2.dev6.official [57a6813bb] many more models can be spawned without fps drop. However, both versions do show high cpu usage for culling 3D. Without animations there's barely any usage.

### Steps to reproduce

Spawn models with animation with the Compatibility renderer.

### Minimal reproduction project

[CullMRP.zip](https://github.com/godotengine/godot/files/13400514/CullMRP.zip)

actions.usage_defines["LIGHT"] = "#define LIGHT_SHADER_CODE_USED\n";
		actions.usage_defines["SPECULAR_SHININESS"] = "#define SPECULAR_SHININESS_USED\n";
		actions.render_mode_defines["skip_vertex_transform"] = "#define SKIP_TRANSFORM_USED\n";
		actions.render_mode_defines["unshaded"] = "#define MODE_UNSHADED\n";
		actions.render_mode_defines["light_only"] = "#define MODE_LIGHT_ONLY\n";
		actions.render_mode_defines["world_vertex_coords"] = "#define USE_WORLD_VERTEX_COORDS\n";
		actions.global_buffer_array_variable = "global_shader_uniforms";
		shaders.compiler_canvas.initialize(actions);
	}
	{
		
		
		ShaderCompiler::DefaultIdentifierActions actions;
		actions.renames["MODEL_MATRIX"] = "model_matrix";
		actions.renames["MODEL_NORMAL_MATRIX"] = "model_normal_matrix";
		actions.renames["VIEW_MATRIX"] = "scene_data.view_matrix";
		actions.renames["INV_VIEW_MATRIX"] = "scene_data.inv_view_matrix";
		actions.renames["PROJECTION_MATRIX"] = "projection_matrix";
		actions.renames["INV_PROJECTION_MATRIX"] = "inv_projection_matrix";
		actions.renames["MODELVIEW_MATRIX"] = "modelview";
		actions.renames["MODELVIEW_NORMAL_MATRIX"] = "modelview_normal";
		actions.renames["VERTEX"] = "vertex";
		actions.renames["NORMAL"] = "normal";
		actions.renames["TANGENT"] = "tangent";
		actions.renames["BINORMAL"] = "binormal";
		actions.renames["POSITION"] = "position";
		actions.renames["UV"] = "uv_interp";
		actions.renames["UV2"] = "uv2_interp";
		actions.renames["COLOR"] = "color_interp";
		actions.renames["POINT_SIZE"] = "point_size";