FFXIV DX11 Client Using Up 13+ GB of RAM

For the past two days, my client has been maxing out my RAM. I have 16 GB total, and the client will peak at around 13-15 GB (depending on how many other things I have open). Then I'll get a Windows error telling me that I should close FFXIV.

If I accept through that message (and don't close FFXIV), the client will eventually plummet back down to less than a GB of RAM used.

I'm on Windows 7, use DX11, and have a GTX 970.

mine was doing the same thing until i had to reformat... external b/u drive died and i handt gone out to get another yet.. so started from a clean slate with new drives
has not done it since tho..