Texture Atlas combine several separate textures into a giant single one, allowing to use the same material for different objects. This technique can improve GPU performances significantly, especially on lower-end devices.
Easy Meshes Atlas & Combines allow you to atlas the objects in your scene with a few clicks, creating new meshes compatible with the Atlas while keeping the originals intact.
You can also combine those meshes (or sub-meshes) together if needed, which can help improve GPU performance further.
