This forum thread has posts from owners of laptops with GeForce 860M graphics cards frustrated over issues with the past few driver releases that made some games unplayable. A campaign began today to inform sites like ours about the problem, which was quickly followed by a post from NVIDIA saying help is on the way: "Just a quick update. We believe we have identified the root cause and are in the process of creating a hotfix driver. As soon as the hotfix driver is available for download, we will make an announcement on this forum." Thanks Joshua.