I have a brand new late-2016 15" retina MBP. Even thought it's brand new, I often find the cursor freezes when I move it. When I got the computer, I used Migration Assistant to convert it to the last backup of my old computer. But I can't think of any other thing I did that might be an issue. It has a 500 GB HD and over 50 GB's of free space. I used to make the cursor super large but made it smaller as per advice I saw on another question but it hasn't changed it. Any advice? It's super annoying!