I don't know if this has already been covered but i'm posting for any1 who might be having this problem. !Turn off win10 fast startup! by unticking this option in control panel/power options/choose what the power buttons do/ and if greyed out, click on change settings that are currently unavailable. at least 3 programs of mine were negatively affected when this was checked. i am almost positive i had turned this off when i 1st upgraded to win10, and believe that 1 of the non-optional windows updates set it back to on. 2 of the programs that i know were affected are my scarlett 6i6 usb interface, and throttlestop. now everything is loading fine, and i don't even notice a longer startup. i'm going to experiment with arturia mini V3 again which i had given up on. hope this helps some1.
i just did the win10 fall update, and they turned the fast startup back on again! just a reminder to turn it off.