Are you using the open source or the proprietary Nvidia driver?
I've no experience with that particular card but I've always found the proprietary drivers from Nvidia to be superior to the open source drivers in every regard .
Here's the link for the 64-bit driver:
NVIDIA DRIVERS 290.10 Certified
and the 32-bit driver:
NVIDIA DRIVERS 290.10 Certified
If you haven't used these before follow the links under "Additional Information" for the "howtos". You'll need the GNU compiler installed to run the installation script.
Hope this helps. If not you've lost nothing by trying.
Good luck and Happy New Year,
sdg