

Choose Global Settings tab and then choose texture filtering option and select high performance from drop down list as shown in the figure below.Then choose "use advanced 3d settings " and click on take me there as shown in figure.After that choose " adjust image settings with preview" don't worry if you don't find that option the important point is you have to edit 3d settings. Now Choose "3d settings" option from the nvidia control panel.

You can do the same by going to control panel and opening it from there.

It is pretty cheap and old technology as now pc's come with the pci express slot.
