### 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 ((uint32_t)ubo_data.size() != p_ubo_size) {
		p_uniform_dirty = true;
		if (!uniform_buffer) {
			glGenBuffers(1, &uniform_buffer);
		}
		ubo_data.resize(p_ubo_size);
		if (ubo_data.size()) {
			memset(ubo_data.ptrw(), 0, ubo_data.size()); 
		}
	}
	
	if (p_uniform_dirty && ubo_data.size()) {
		update_uniform_buffer(p_uniforms, p_uniform_offsets, p_parameters, ubo_data.ptrw(), ubo_data.size());
		glBindBuffer(GL_UNIFORM_BUFFER, uniform_buffer);
		glBufferData(GL_UNIFORM_BUFFER, ubo_data.size(), ubo_data.ptrw(), GL_DYNAMIC_DRAW);
		glBindBuffer(GL_UNIFORM_BUFFER, 0);
	}
	uint32_t tex_uniform_count = 0U;