First of all 85c while gaming is perfectly normal. I also bet your fan speed doesn't get above 67% under those conditions. So in Auto mode, everything is running as designed. In addition, with an EVGA card, you have the reference cooler which vents all exhaust heat outside the case, so no problems there either with a normal 85c operating temp.
Now, if you still want to focus on lower temperatures at the expense of a louder fan profile, then I recommend that you use Afterburner instead of Precision. Afterburner has an intuitive graph system for setting a new fan profile. You can adjust it to kick in a higher fan speed at lower temperatures to delay and avert the GPU hitting an undesirable temp.http://downloads.guru3d.com/Afterburner-2.0.0-Final-download-2562.html