I just installed SH#D 6.4.2 on Windows 10 machine with high end RAM, Video cards, drivers, etc. and have horrid problems when moving the mouse over any of the menu boxes. For instance when modifying a "wall." Turning off all 3D features and taking the 3D window down to NOTHING, as in not appearing at all, helped. This really stinks for a Windows 10 install this late in the game. How do you roll back to a previous version of SH3D that actually will work with Win10?