Good morning! Thank you for posting in the Final Fantasy XIV Technical Support Forums.

If this is only affecting one character, then it may be something to do with your locally-saved settings. Go to 'My Documents' > 'My Games' > 'Final Fantasy XIV' and delete that folder. If there are any corrupted files that are associated only with that character, this will get rid of them.

If this does not solve the issue, try updating your graphics card drivers and doing a clean boot. To do a clean boot simply open the task manager and select the 'Start up' Tab. Disable everything here and restart the PC. This will make sure that no background processes are interfering with the game.

Please be sure to install the game to the C: drive as this works best with Final Fantasy XIV. Lastly, please be sure that no background processes are interfering with FFXIV (i.e. Anti-virus software, OneDrive, Discord etc.)

If the issue persists, please try the following along with the previously provided suggestions:
- Please try running the game as an administrator.
- Please be sure that Final Fantasy XIV is installed to the C: Drive. (If Steam version, make sure both the game and Steam are installed on same drive)
- Please be sure to disable or remove any overlays (Discord, Steam, NVIDIA etc.) as they may interfere with startup.
- Make sure that the Windows OS is fully updated.
- Verify installation files (Steam)
- Reinstall game (If steam version, try uninstalling and reinstalling both the game and Steam), when reinstalling the game please make sure to also remove the local files as previously suggested. Please note, it is possible there may be some files hidden in the recycling bin as well.

Thank you once again for visiting the Final Fantasy XIV Technical Support Forums!