I use 4 image sprite and it all went quite well, until I had to add SubImage Index module.
Now I can see edges of previous and next image. Is there a way to tweak it with numbers? Or should I leave larger spaces between images in the sprite?
Subimagine index only divides the image into parts. As far as I know, there is no way to add space inbetween, other than to directly add that space into your texture. You best check your texture, to make sure your frames all are equal in size.