### 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)

if (global_var_type_names[i] == type) {
					gvtype = RS::GlobalShaderParameterType(i);
					break;
				}
			}
			ERR_CONTINUE(gvtype == RS::GLOBAL_VAR_TYPE_MAX); 
			Variant value = d["value"];
			if (gvtype >= RS::GLOBAL_VAR_TYPE_SAMPLER2D) {
				
				if (!p_load_textures) {
					continue;
				}
				String path = value;
				if (path.is_empty()) {
					value = RID();
				} else {
					Ref<Resource> resource = ResourceLoader::load(path);
					value = resource;
				}
			}
			if (global_shader_uniforms.variables.has(name)) {
				
				global_shader_parameter_set(name, value);
			} else {
				global_shader_parameter_add(name, gvtype, value);
			}
		}
	}
}
void MaterialStorage::global_shader_parameters_clear() {