New PC not strong enough for the game?

[Skyl1n3]

The CPU in your Laptop is easily 5-6x better than what you have in your Desktop system hence slightly better performance where-as your other system suffers from a weaker CPU but better GPU in which it's being held back by the CPU.

Also just because FFXIV doesn't utilize 100% of the GPU doesn't mean it's not working properly, my HD 7950 for example only has between 65-70% of its power utilized while playing but it's still a comfortable 55-60fps