### 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.render_mode_defines["disable_velocity"] = "#define DISABLE_VELOCITY\n";
		actions.render_mode_defines["keep_data"] = "#define ENABLE_KEEP_DATA\n";
		actions.render_mode_defines["collision_use_scale"] = "#define USE_COLLISION_SCALE\n";
		actions.default_filter = ShaderLanguage::FILTER_LINEAR_MIPMAP;
		actions.default_repeat = ShaderLanguage::REPEAT_ENABLE;
		actions.global_buffer_array_variable = "global_shader_uniforms";
		shaders.compiler_particles.initialize(actions);
	}
	{
		
		ShaderCompiler::DefaultIdentifierActions actions;
		actions.renames["COLOR"] = "color";
		actions.renames["ALPHA"] = "alpha";
		actions.renames["EYEDIR"] = "cube_normal";
		actions.renames["POSITION"] = "position";
		actions.renames["SKY_COORDS"] = "panorama_coords";
		actions.renames["SCREEN_UV"] = "uv";
		actions.renames["TIME"] = "time";
		actions.renames["FRAGCOORD"] = "gl_FragCoord";
		actions.renames["PI"] = _MKSTR(Math_PI);
		actions.renames["TAU"] = _MKSTR(Math_TAU);
		actions.renames["E"] = _MKSTR(Math_E);
		actions.renames["HALF_RES_COLOR"] = "half_res_color";
		actions.renames["QUARTER_RES_COLOR"] = "quarter_res_color";
		actions.renames["RADIANCE"] = "radiance";
		actions.renames["FOG"] = "custom_fog";
		actions.renames["LIGHT0_ENABLED"] = "directional_lights.data[0].enabled";
		actions.renames["LIGHT0_DIRECTION"] = "directional_lights.data[0].direction_energy.xyz";
		actions.renames["LIGHT0_ENERGY"] = "directional_lights.data[0].direction_energy.w";
		actions.renames["LIGHT0_COLOR"] = "directional_lights.data[0].color_size.xyz";