What is better for performance?a tileset or multiple images

So i was wondering what is more efficient: having some large images (512 by 512) or 2 tilesets over each other (i need more layers) the image will have both tiles that repeat a lot(walls, corners, etc.) Which i know adds benefits to using tilemap, but also diffrent small parts (cracks,vases,chains,etc.) That are very diffrent, don't appear many times and need no colissions. So which is better?

So i was wondering what is more efficient: having some large images (512 by 512) or 2 tilesets over each other (i need more layers) the image will have both tiles that repeat a lot(walls, corners, etc.) Which i know adds benefits to using tilemap, but also diffrent small parts (cracks,vases,chains,etc.) That are very diffrent, don't appear many times and need no colissions. So which is better?

i know that tilesets are best for performance

> So i was wondering what is more efficient: having some large images (512 by 512) or 2 tilesets over each other (i need more layers) the image will have both tiles that repeat a lot(walls, corners, etc.) Which i know adds benefits to using tilemap, but also diffrent small parts (cracks,vases,chains,etc.) That are very diffrent, don't appear many times and need no colissions. So which is better?

>

i know that tilesets are best for performance

I know they are effective but only if there are not a lot of diffrent sprites