http://www.microsoft.com/download/en...s.aspx?id=6812

But first, make sure that you don't have frame buffering turned on with vertical sync turned off--maybe your system is 'too good' for ffxiv and is dumping huge amounts of extra frames every so often...

Fixing these problems is hard, and PIX won't tell you much besides device load since directx is used pretty much exclusively for device interfacing in SE's engine... At least I think so. Class is starting, but I'll check back afterwards

Good luck !