I've recently run into a problem which is quite frustrating.
Just before I had to run Skyrim via it's normal launcher in order for it to "set the options based on the hardware" so that BOSS would work again.
Problem is, since then, the mouse within the menu/ui in Skyrim is very fast, while actually in-game it is quite slow.
I'm talking about maybe 3 times faster than usual... Editing the mouse sensitivity does nothing.
All help is appreciated.