Good afternoon and thank you for posting on the Final Fantasy XIV Technical Support Forums.

Has this always been a problem since starting the game? Or did it start occurring sometime afterwards?

You can try to assign the Nvidia graphics card manually. 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).

We hope we can be of assistance in helping you enjoy the exciting world of Final Fantasy XIV!