I was through the long PDF file in preview and got off the computer for a bit. When I came back, the scrolling speed of Logitech VX Nano was extremely slow. I don’t know what happened. I have scrolling on the highest in system preferences and nothing helped. It takes very long just to get through a page. I know I could just use hyper scrolling, but it is still slow and only fast if I spin it all the way, which then goes all the way to the bottom of the page. What could be wrong? Please help.
