Ah yes, as pointed out by Yarxideyn, you are using two different graphics cards.

You need to check in: System Configuration > Display > check here it should say NVIDIA RTX 3050 Ti Laptop... etc, make sure it isn't: AMD Radeon Graphics, as that is the inbuilt CPU graphics and likely the cause of your issue.

If it says "DISPLAY1.NIVIDIA..." then its using the correct GPU, I would then check the resolution mode in the same tab, make sure its set to Fullscreen and not Borderless window or Window.

I would double check the Windows setting as well, click on the Nvidia icon in the Taskbar by clicking the ^ icon, open the Nvidia app and select Manage 3D, then click the blue link "Windows graphics settings" and add FFXIV to the list if it doesn't automatically show by "custom options for apps > browse > find the ffxivboot.exe", once it is the list click it and set it to use the Nvidia GPU.
Next go back to the Nvidia app where the blue link is to windows settings, and click the tab "Program settings" then in the newly opened tab of options, select "select program" and find ffxivboot.exe, add it, the option below "2. Select preferred graphics processor for this program" make sure it is Nvidia RTX 3050 Ti and save by clicking Apply.

Then login and test.