Brand new build is heavily underperforming.

Solution
Make sure your monitor is plugged into your graphics card and make sure you have the Nvidia graphics driver installed. If you have your monitor plugged into your motherboard, then you're using the integrated graphics and that would explain your performance problems.
Make sure your monitor is plugged into your graphics card and make sure you have the Nvidia graphics driver installed. If you have your monitor plugged into your motherboard, then you're using the integrated graphics and that would explain your performance problems.
 
Solution