Performance Problems with High End Graphics Card!

I am having a major performance problem with minecraft!
My CPU is not being fully utilized and feels like only 1 or 2 cores are used and additionally it doesn't feel like my GTX 770 is being used as I'm getting terrible performance.

This has lead me to believe that minecraft is either eally unoptimized and/or it is using the integrated graphics in the CPU instead of the dedicated graphics.

How to re-create: Run Minecraft 1.8.7 on a PC with the same or worse specs on a creative world and fly around for 5 minutes.

Note: Giving java 6GB of RAM helped to make frame rate drops less inconsistent and increased performance by a few frame per second.