Help Me!! Image optimization~

I have a png image optimization now.

You are using a texture compression format pvr.ccz use TexturePacker,
capacity is greater than the png texture.

It also occurs in the anti-aliasing problem.
If you use the format pvr.ccz, there is a boundary that can not be seen in the TexturePacker.

More more more and more obvious problem PVR but good.

Why is it that so?

Accept the format png, you should change it to something else in RGBA8888 the compression format of the images?

Sorry. I’m korean. I can’t write english very well;;