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

Please try the following:
- Switch between Fullscreen and Borderless Windowed modes to see if it affects the issue.
- Please try adjusting/lowering the resolution.
- Please try running the game as an administrator.

Disable Full Screen Optimizations. To disable this, please find the "ffxiv_dx11.exe" and right click it and select properties. Then under the compatibility tab there will be a check box labeled "Disable Full Screen Optimizations". Check it and click apply.

Open the Nvidia Control Panel and going to 'Manage 3D Settings'. From here, select 'Program Settings' and select Final Fantasy XIV. You should see an option to select the GPU. Make sure it's set to your dedicated graphics card (it may be set to 'Auto' by default)

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