Unity 2d animation acting strange

i have made a simple "game" in unity, and I've got two objects with animated sprites. now here is the problem - when i run the game, the animation is acting strange - moving one pixel to the left or the right when it isn't supposed to, which is really frustrating. ive got one object with sprite renderer, box collider, rigid body 2d an an animator (apply root motion off, normal update mode), and another object with just an animator, box collider 2d and a sprite renderer