Greetings, Shura!

Thank you for posting your concerns about your name shaking when running or riding a chocobo. I have made sure to submit all of your information to the development team, and they will thoroughly investigate this matter, based on your report. Unfortunately, I cannot guarantee that a direct response will be posted on this thread. However, I do recommend checking here or here for any details regarding the development team's investigation. Thanks again for your report!