This question already has an answer here:

Circle tool creates shape with uneven border.No brush,no dashline option is on.All other shapes are fine but anything related to curve doesn't work.as you can see in this picture circle and rounded corners of the rectangle are uneven

marked as duplicate by Scott adobe-illustrator May 30 at 9:24

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • 2
    Looks like a possible graphics card issue. Check your graphics card driver is up to date, or switch off the "GPU performance" option under Edit > Preferences > Performance. – Billy Kerr May 30 at 9:17
  • Thank you Billy Kerr. That worked. Thanks a lot – Munia Tanzin May 30 at 10:40

Browse other questions tagged or ask your own question.