Prints fail at 4" tall.

  • Please help.
    I have an Ender 3 v2.
    Whenever a print reached about 4 inches it starts to stutter and have lines like in the pictures. No problems until it reaches about 4 inches tall. I thought my Z axis was off but it is straight and working fine. Goes all the way up and down without problems and z axis screw is vertical.
    Any help or suggestions would be appreciated.
    Thank you.

    IMG_2568.jpeg IMG_2567.jpeg IMG_2566.jpeg IMG_2565.jpeg

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