with office 2010, this does not appear to be an issue. I have attached an excell file which you can see the problem in.
I have seen this issue on many different types of coputer.
Sometimes it can take up to 2 seconds to move between cells.
When using MS office 2016 as a direct enterprise install, or MS office 365, I notice a real slow down when using ms excel and using the arrow keys to navigate between cells.
