Have you tried updating the Nvidia GeForce driver to the latest version? As well as installing the latest version of DirectX as well? It could be that your GL72 is being bottlenecked by poor optimization. Updating to the latest updates of your graphic card as well as for the game running on the latest DirectX could be crucial for a better fps experience. Go install "Nvidia Experience" from Nvidia's website if you haven't got that program installed yet. I hope it helps!