Reinstall??

[Arrhin]

Often times game issues are caused by corrupt configuration files. These are not typically removed by the uninstall process. The good part is you can delete (or temporarily move them for testing) without doing anything else. The bad part is you will lose all your UI/Macro settings unless you have backed up to the server recently (Always do this semi regularly). For testing, I recommend cutting and pasting the folders to the desktop, XIV will automatically replace them.

Navigate to Local Disk (C ) > Users > Usernamehere > Documents > MyGames > FINAL FANTASY - A Realm Reborn

In this folder you will see a number of folders named FFXIV_CHR00insertrandomnumberletterstring as well as FFXIV.cfg , FFXIV_BOOT.cfg

Cut and paste these to the desktop (just testing right now, so preserve these) Launch FFXIV and see if the problem resolves.
Hopefully this helps.