On an old Nokia Booklet 3G too short of RAM really to run Windows 10 (has 256GB SSD which helps) and can't be sure whether as you say some setting carried over from previous Windows 7 installation. Sometime I may get around to carrying out new installation of Nokia Suite and possibly PC Suite under Windows 10 on another PC and see if works out of box or you have to use compatibility mode for PC Suite. For the number of people it would benefit though, it doesn't really seem to be worth the hassle!