Good morning! Thank you for posting in the Final Fantasy XIV Technical Support Forums. Generally the issue you are describing occurs when computer hardware cannot meet the demands of the game. Although your GPU may be more than sufficient, there is a possibility that your CPU may be struggling.

There is some debate whether connection issues may be a contributing factor, however these issues would generally present itself in a different manner but should not actually affect the FPS.

To try and resolve this, please attempt the following:
- Reinstall the drivers for your graphics card and sound drivers (if applicable) if they are already updated.
- Please try running the game as an administrator.
- Perform a clean boot by opening the task manager and select the 'Start up' Tab. Disable everything.
- 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)

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