My cocos2d-iphone game has tiled maps. The tilesets textures are rather big. I got around 5 tilesets and each one is 2048x2048 (retina).

My maps are around 80x80. They have around 8 layers and each one is obviously using one tileset.

The frame rate falls (it goes around 30 sometimes. I know 30 is rather aceptable, but still, I want 50+).

So given that textures are huge I can't afford to make many layers (since each one loads a texture of these).

So how about I divide my tileset textures into much smaller tilesets (like 1024x1024 each)? That will allow me to use many more layers for my maps, right?

Are there any other tips for huge retina display tile maps?