The slow start menu is awful. I want to press start then type what I want to open but it is so slow you have to wait nearly 2s to type or it will lose the first few characters. Add to that the search result quality is dire.
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\Windows Search]
"ConnectedSearchUseWeb"=dword:00000000
"AllowCortana"=dword:00000000
https://pastebin.com/ApnfB7wCThere ought to be an unofficial Windows 10 Settings app that uncovers stuff like this. Somehow Microsoft isn't quite getting it right and they ship Windows 10 with two different ones...
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Windows Search]