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

The error you are describing may occur when the system shuts down unexpectedly or improperly. We suggest to perform a clean boot by opening the task manager and selecting the 'Start up' Tab. Then, disable everything located under that tab. Additionally, can you submit a Final Fantasy XIV system report? Simply go to the 'Config' option on the Final Fantasy XIV launcher and to the right of 'System Information' click on 'Display'.

Lastly, you mentioned that you experienced this in high volume areas (dungeons, raids, or cinematic trailers), do you experience this issue anywhere else in the game?

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