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

Like the above poster mentioned, I'd like to know what platform you are on (PC, PS4, Mac) and when this started happening.

If on PC, does this same thing happen on directx 9 mode?

It may be a long shot but I've seen something similar if the HDMI/Display Port cable is loose or faulty, have you tried using a different cable?

Can you submit a FFXIV system report? Simply go to the 'Config' option on the Final Fantasy XIV launcher and to the right of 'System Information' click on 'Display.' Then post the results here (PC only).

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