Good morning and thank you for posting in the Final Fantasy XIV Technical Support Forums,

We would like to recommend the following troubleshooting steps:

1) Update and reinstall the drivers for your graphics card
2) Turn off Fullscreen Optimizations. Find the executable file for the game (normally found in the install folder), right-click it and select 'Properties'. Under the 'Compatibility' tab, check the box labeled 'Disable Fullscreen Optimizations', then click 'Apply'.
3) Remove any unnecessary USB or audio devices (controllers, headphones, flash drives etc.)

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