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Please try the following:
- Please try adjusting/lowering the resolution.
- Please try running Steam as an administrator rather than the game itself.
- Please be sure that Final Fantasy XIV is installed to the default drive, should the issue persist please try installing on a different drive if possible (If Steam version, make sure both the game and Steam are installed on same drive)
- Make sure that the Windows OS is fully updated.
- Delete locally saved content ('Documents' > 'My Games' folder)
When the game is running, open the task manager, click the ‘Details Tab” Find the game and right click it. Select ‘Set Priority’ options to “High”

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