Video Card related lag?

[Kenji1134]

I am running Windows 7 with a nvidia GTX 670 using the latest drivers, and ever since the first maintenance after 2.2, during "primetime", namely just after reset and in the evening when people are raiding, I get simply unplayable lag in game.

Running around in a town is choppy, and as soon as combat starts, my fps drop to 1, literally 1... Outside of combat, standing still, 60+ fps. No issues with any other game though...

The interesting thing is that when I get this 1 fps slideshow lag, my GPU core load drops to 0... As in my video card is not receiving any data from FFXIV.exe. Then it will jump up to 20-30% for a moment, it renders 1-2-3 frames, and drops to zero again.

I have reinstalled my video card drivers.
I have reinstalled FFXIV.
I am running everything as admin.
I have even set the CPU priority of FFXIV to Above Normal, High, and even Realtime... nothing helps.

The Tech Support forum was recently wiped clean, so I highly doubt it is worth posting there.
Maybe someone here has encountered this same issue and found a way to fix it? Or is running a similar setup and has found a way to fix it?
I am reaching the end of my rope here. I like this game and the people I play with... but atm I simply cannot play during normal hours due to these technical issues.