Custom texture distorts

Am fairly new to making a mod with mcreator, but this is something thats been happening since I started making blocks.

I make a new solid block not changing anything from the options, only the block model leaving it as single texture. I use images that are bigger than the usual 16x16 for the textures. Am able to import them and add them to the block with no problem. The issue is when testing the mod, when going far from the block in minecraft, the texture distorts like this .

If you notice, on the block in the hand, the texture is fine, but not in the world itself. This png image for the texture is 651x651.

I tried already changing to the block model to normal or even making a resource pack separately, but still keeps happening.