Quote Originally Posted by Netphreak View Post
I'm currently having this issue as well. Trying to figure out how to force it to use the nvidia GPU rather than the intel HD4000. When I try to add the client.exe in the nvidia control panel program settings, it seems to think that is associated with phantasy star online 2.
I've asked this question before myself. I have an NVidia Optimus setup (680M & HD4000), and although the NC client insists its using the Intel, Optimus does actually do its job and switch over to the NVidia when in game.

Run MSI Afterburner and you'll see the NVidia is being used. It is for me anyway.

Also, a note: You cannot disable Optimus. It is simply not possible.