Animation in Libgdx using .pack file

Question

I want to make an animation of player when he 's running. I put all images into a .pack file using texture packer. And here's my code:

TextureAtlas atlas = new TextureAtlas(Gdx.files.internal("images1/images.pack"));
private Array<AtlasRegion> textureRegion1 = new Array<AtlasRegion>();
textureRegion1 = atlas.findRegions("rps_man");
animation[0] = new Animation(1/4f, textureRegion1);
TextureRegion currentFrame = animation[0].getKeyFrame(stateTime, true);

The problem is: my animation run well but it's not smooth. it had "deltils" around the player. Any helps will be appreciated. Thank for reading!

P/s: I had opened .pack file by Notepad and changed filter: Nearest,Nearest to filter: Linear,Linear but nothing happened.