### 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.renames["VIEW"] = "view";
		actions.renames["SPECULAR_AMOUNT"] = "specular_amount";
		actions.renames["LIGHT_COLOR"] = "light_color";
		actions.renames["LIGHT_IS_DIRECTIONAL"] = "is_directional";
		actions.renames["LIGHT"] = "light";
		actions.renames["ATTENUATION"] = "attenuation";
		actions.renames["DIFFUSE_LIGHT"] = "diffuse_light";
		actions.renames["SPECULAR_LIGHT"] = "specular_light";
		actions.usage_defines["NORMAL"] = "#define NORMAL_USED\n";
		actions.usage_defines["TANGENT"] = "#define TANGENT_USED\n";
		actions.usage_defines["BINORMAL"] = "@TANGENT";
		actions.usage_defines["RIM"] = "#define LIGHT_RIM_USED\n";
		actions.usage_defines["RIM_TINT"] = "@RIM";
		actions.usage_defines["CLEARCOAT"] = "#define LIGHT_CLEARCOAT_USED\n";
		actions.usage_defines["CLEARCOAT_ROUGHNESS"] = "@CLEARCOAT";
		actions.usage_defines["ANISOTROPY"] = "#define LIGHT_ANISOTROPY_USED\n";
		actions.usage_defines["ANISOTROPY_FLOW"] = "@ANISOTROPY";
		actions.usage_defines["AO"] = "#define AO_USED\n";
		actions.usage_defines["AO_LIGHT_AFFECT"] = "#define AO_USED\n";
		actions.usage_defines["UV"] = "#define UV_USED\n";
		actions.usage_defines["UV2"] = "#define UV2_USED\n";
		actions.usage_defines["BONE_INDICES"] = "#define BONES_USED\n";
		actions.usage_defines["BONE_WEIGHTS"] = "#define WEIGHTS_USED\n";
		actions.usage_defines["CUSTOM0"] = "#define CUSTOM0_USED\n";
		actions.usage_defines["CUSTOM1"] = "#define CUSTOM1_USED\n";
		actions.usage_defines["CUSTOM2"] = "#define CUSTOM2_USED\n";
		actions.usage_defines["CUSTOM3"] = "#define CUSTOM3_USED\n";
		actions.usage_defines["NORMAL_MAP"] = "#define NORMAL_MAP_USED\n";
		actions.usage_defines["NORMAL_MAP_DEPTH"] = "@NORMAL_MAP";
		actions.usage_defines["COLOR"] = "#define COLOR_USED\n";