Hi Nexum, I saw your post about your need to optimize your game and wanted to give you a couple tips if I could. If you have Unity pro you can open the profiler window and click deep profile and it should tell you exactly where your resources are going. One thing to keep in mind about Unity as well is that using too many GUI calls absolutely kills your frame rate, sometimes its best to use planes bill-boarded to your camera as long as you're not zooming in and out with it. If you have a lot of little objects in your scenes with textures it's usually best to combine the smaller textures into one larger texture in order to reduce your draw calls. Another thing that might help is if you are using colliers is to use proxy meshes to save on cpu power and gives you better results for physics.
I hope this helps mate, Cheers