### 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)

skin_stride += 4 * sizeof(uint16_t);
				attribs[i].normalized = GL_FALSE;
				attribs[i].integer = true;
			} break;
			case RS::ARRAY_WEIGHTS: {
				attribs[i].offset = skin_stride;
				attribs[i].size = 4;
				attribs[i].type = GL_UNSIGNED_SHORT;
				skin_stride += 4 * sizeof(uint16_t);
				attribs[i].normalized = GL_TRUE;
			} break;
		}
	}
	glGenVertexArrays(1, &v.vertex_array);
	glBindVertexArray(v.vertex_array);
	for (int i = 0; i < RS::ARRAY_INDEX; i++) {
		if (!attribs[i].enabled) {
			glDisableVertexAttribArray(i);
			continue;
		}
		if (i <= RS::ARRAY_TANGENT) {
			attribs[i].stride = (i == RS::ARRAY_VERTEX) ? position_stride : normal_tangent_stride;
			if (mis) {
				glBindBuffer(GL_ARRAY_BUFFER, mis->vertex_buffer);
			} else {
				glBindBuffer(GL_ARRAY_BUFFER, s->vertex_buffer);
			}
		} else if (i <= RS::ARRAY_CUSTOM3) {
			attribs[i].stride = attributes_stride;
			glBindBuffer(GL_ARRAY_BUFFER, s->attribute_buffer);