Pixels expanding issue while movement

I'm making 2D pixel game and I can't solve a issue with pixel rendering on moving. There's sprite (8x8 pixels). Unity's cameras "see" that 8pixels as 128 pixels (because of camera's zoom). BUT the issue is happening when I try to move that sprite. my 128 pixels become to 127 or 129 sometimes. There's images below that shows what actually happening.

After I slowly move the sprite happening that:

Someone know how to solve this issue?