As some of you may know Apple just released the latest stable version of macOS a few weeks ago, 10.13 High Sierra. There have been reports of KSP as well as other games presenting issues that render them unplayable. If you have not updated your computer to High Sierra and none of the new features are essential for your day-to-day workflow, we strongly suggest you wait for it and stay on Sierra for now. If you have already updated to High Sierra there are a couple recommendations that could help