Thank you for the reply!

Have you tried changing the compatibility mode? If not please try by, right click on the exe file (Default location: C:\Program Files (x86)\SquareEnix\Final Fantasy XIV - A Realm Reborn\boot\ffxivboot.exe), right click it and select ‘Properties.’ Select the ‘Compatibility’ tab and select Windows 7.

Also, please try a clean boot by opening the task manager and select the 'Start up' Tab. Disable everything here and restart the PC.

Hope to see you online!