The Built in Linux drivers for Geforce video cards while good are not perfect,
and that could be part of the problem.
However you "might" have an option to install the drivers from Nvidia.
Here is how you do it:
First I would do a full update for the system from the update manager, and reboot to enable any new kernel stuff that would be put on the system (this really might be all thats needed).
Next open the "Additional Drivers" application and let it look for any drivers that might work. If it finds any it will display a list. you simply click on the one you want and click the activate button. (On a side note, for me I normally avoid drivers marked "post release".) After it completes the install you will need to reboot.