### 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)

glBufferSubData(GL_UNIFORM_BUFFER, i * region_byte_size, region_byte_size, &global_shader_uniforms.buffer_values[i * GlobalShaderUniforms::BUFFER_DIRTY_REGION_SIZE]);
					global_shader_uniforms.buffer_dirty_regions[i] = false;
				}
			}
			glBindBuffer(GL_UNIFORM_BUFFER, 0);
		}
		global_shader_uniforms.buffer_dirty_region_count = 0;
	}
	if (global_shader_uniforms.must_update_buffer_materials) {
		
		
		for (const RID &E : global_shader_uniforms.materials_using_buffer) {
			Material *material = material_storage->get_material(E);
			ERR_CONTINUE(!material); 
			material_storage->_material_queue_update(material, true, false);
		}
		global_shader_uniforms.must_update_buffer_materials = false;
	}
	if (global_shader_uniforms.must_update_texture_materials) {
		
		
		for (const RID &E : global_shader_uniforms.materials_using_texture) {
			Material *material = material_storage->get_material(E);
			ERR_CONTINUE(!material); 
			material_storage->_material_queue_update(material, false, true);
		}
		global_shader_uniforms.must_update_texture_materials = false;
	}
}
RID MaterialStorage::shader_allocate() {