GPU usage is way too high for some time now!

[DarkArvan]

Well, under best situations you always want maximum workload on your GPU. No 100% GPU usage would mean bad game That uses CPU for too much things That would normally do the GPU, lile unoptimized guild wars 2 or your CPU is just too weak for the GPU.
other games do this too, this is not an issue, this is normal IF you dont use any frame limiter. e.g. Assassin's Creed Origins, Battlefield or any other modern game.
but i agree in the term that something might be wrong with the ffxiv client, because most apps in Background immediately hang up with this game.