I recently updated Windows 10  to v1709 (OS Build 16299.125) and Mastercam 2018 MU2 has been running slower. I mainly notice the issue when opening toolpath parameter dialogs and navigating through the various tabs. When switching through tabs, it can take a few seconds for the new page to appear. I installed the latest driver for my graphics card (NVIDIA Quadro 4000) but the issue persists.